ESSEX CORPORATION
8-K, 1997-10-30
ENGINEERING SERVICES
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                       SECURITIES AND EXCHANGE COMMISSION

                              WASHINGTON, DC 20549


                                    FORM 8-K


                                 CURRENT REPORT


     Pursuant to Section 13 or 15 (d) of the Securities Exchange Act of 1934


Date of Report:      October 30, 1997


                                ESSEX CORPORATION
             (Exact name of Registrant as specified in its charter)




 
         Virginia               Commission File No. 0-10772          54-0846569
(State or other jurisdiction of                           (IRS Employer ID No.)
incorporation or organization)



         9150 Guilford Road
         Columbia, Maryland                                          21046-1891
(Address of principal executive office)                              (Zip Code)



Registrant's telephone number, including area code:              (301) 939-7000




<PAGE>


                                ESSEX CORPORATION

Item 2.    Acquisition or Disposition of Assets -

           On October 16, 1997,  Essex  Corporation (the "Company") sold certain
           of the assets of its Systems Effectiveness Division ("SED")  to  Star
           Mountain,   Inc.,  a  privately-held   corporation.   The  price  was
           $1,475,000,  subject to  adjustment as described  below.  The Company
           sold the  accounts  receivable,  contracts,  fixed assets and certain
           other assets. The acquiring company assumed certain liabilities, such
           as accounts  payable,  accrued  vacation  and certain  operating  and
           capital lease obligations.  The effective date of the transaction was
           October 1, 1997.

           The  Company  received  $525,000  in  cash  at  closing  and  took  a
           promissory for $325,000 payable in equal monthly installments over 15
           months ending January 1999. The balance of $625,000 is held in escrow
           and is expected to be paid  through  January  1998 as the  respective
           contracts of SED are novated to the acquiror.  Each contract novation
           requires the approval of the other party in the contract, principally
           agencies  of the U.S.  Government.  The  sale  price  is  subject  to
           adjustment   for  any  change  in  the  net  assets  and  to  certain
           indemnifications and warranties by the Company which could effect the
           ultimate amount of proceeds received.

Item 7.    Financial Statements and Exhibits

           (b)       Pro Forma Financial Information

                     The financial  information required for this item could not
                     be prepared  by the date that this  report is being  filed.
                     The required information should be filed as an amendment to
                     this Form 8-K, as soon as practicable.

           (c)       Exhibits

           2.2       Asset Purchase Agreement dated October 16, 1997 between
                     Essex Corporation and Star Mountain, Inc.

                                   SIGNATURES

           Pursuant to the requirements of the Securities  Exchange Act of 1934,
the  Registrant  has duly  caused  this report to be signed on its behalf by the
undersigned hereunto duly authorized.


                                              ESSEX CORPORATION
                                              (Registrant)



                                              \Joseph R. Kurry, Jr.\
DATE:  October 30, 1997                       Joseph R. Kurry, Jr.
                                              Vice President, Treasurer and
                                              Chief Financial Officer

                                                         2

<PAGE>





                            ASSET PURCHASE AGREEMENT


                                     BETWEEN


                               STAR MOUNTAIN, INC.


                                       AND


                                ESSEX CORPORATION


                             FOR THE PURCHASE OF THE


                         SYSTEMS EFFECTIVENESS DIVISION





                             dated 16 October, 1997
                 and effective as of 12:01 a.m., 1 October, 1997










<PAGE>



                                TABLE OF CONTENTS

                                                                            PAGE

1.  PURCHASE AND SALE OF ASSETS.............................................1

    1.1      Transfer of Assets.............................................1
    1.2      Consideration for the Transferred Assets.......................4
    1.3      Assumption of Liabilities......................................5
    1.4      Allocation of Purchase Price...................................6
    1.5      Security Agreement.............................................6
    1.6      Subordination to all Senior Financing..........................6

2.  REPRESENTATIONS AND WARRANTIES OF SELLER................................7

    2.1      Organization and Qualification ................................7
    2.2      Corporate Power and Authority..................................7
    2.3      Validity, Etc..................................................8
    2.4      Books and Records..............................................8
    2.5      Financial Statements...........................................9
    2.6      Absence of Undisclosed Liabilities.............................9
    2.7      Labor and Employee Relations...................................9
    2.8      Powers of Attorney; Absence of Limitations on Competition;
             Guarantees....................................................10
    2.9      Significant Customers.........................................10
    2.10     Governmental Approvals/Filings................................11
    2.11     Absence of Adverse Change; Conduct of Business................11
    2.12     Certain Practices.............................................11
    2.13     Compliance with Law; Licenses and Permits.....................12
    2.14     Employee Benefits.............................................12
    2.15     Fixed Assets..................................................13
    2.16     Insurance.....................................................14
    2.17     Outstanding Contracts.........................................14
    2.18     Outstanding Leases............................................14
    2.19     Intellectual Properties.......................................15
    2.20     Proprietary Information of Third Parties......................16
    2.21     Transactions with Affiliates..................................16
    2.22     Taxes.........................................................16
    2.23     Litigation....................................................17
    2.24     Environmental Matters.........................................18
    2.25     Broker's or Finder's Fees.....................................20
    2.26     Disclosure....................................................20



                                      - i -

<PAGE>



3.  REPRESENTATIONS AND WARRANTIES OF BUYER................................20

    3.1      Organization..................................................20
    3.2      Corporate Power and Authority.................................21
    3.3      Validity, Etc.................................................21
    3.4      Broker's or Finder's Fees.....................................21
    3.5      Disclosure....................................................21

4.  COVENANTS AND AGREEMENTS...............................................22

    4.1      Cooperation...................................................22
    4.2      Best Efforts..................................................22
    4.3      Tax Returns...................................................22
    4.4      Investigations................................................23
    4.5      Conduct of Business in the Ordinary Course....................23
    4.6      Preservation of Business......................................24
    4.7      Notification of Material Changes and Litigation...............24
    4.8      Payment of Liabilities........................................25
    4.9      Employees and Consultants.....................................25
    4.10     Billed Accounts Receivable....................................25

5.  CONDITIONS TO THE BUYER'S OBLIGATIONS..................................26

    5.1      Consents......................................................26
    5.2      [Reserved]....................................................26
    5.3      Novation of Contracts.........................................26
    5.4      Representations and Warranties................................26
    5.5      [reserved]....................................................26
    5.6      Opinion of Counsel to the Seller..............................26
    5.7      Closing Documents.............................................28
    5.8      Approval of the Buyer and Its Counsel.........................29

6.  CONDITIONS TO THE SELLER'S OBLIGATIONS.................................29

    6.1      Opinion of Counsel to the Buyer...............................29
    6.2      Closing Documents.............................................29
    6.3      Approval of the Seller and Its Counsel........................29

7.  THE CLOSING AND CERTAIN CLOSING DELIVERIES.............................29

    7.1      Time and Place of Closing.....................................29
    7.2      Deliveries by the Seller......................................30
    7.3      Deliveries by the Buyer.......................................31

                                     - ii -

<PAGE>




8.  INDEMNIFICATION.........................................................32

    8.1      Survival.......................................................32
    8.2      Indemnification by Seller......................................32
    8.3      Notice to Seller...............................................33
    8.4      Indemnification by Buyer.......................................33
    8.5      Notice to the Buyer............................................34
    8.6      Survival of Indemnification....................................34
    8.7      Offset.........................................................35

9.  MISCELLANEOUS...........................................................35

    9.1      Knowledge of Seller............................................35
    9.2      "Person" Defined...............................................35
    9.3      Notices........................................................35
    9.4      Entire Agreement...............................................37
    9.5      Modifications and Amendments...................................37
    9.6      Assignment/Binding Effect......................................37
    9.7      Parties in Interest............................................37
    9.8      Governing Law..................................................37
    9.9      Arbitration....................................................38
    9.10     Severability...................................................38
    9.11     Interpretation.................................................38
    9.12     Headings and Captions..........................................39
    9.13     Reliance.......................................................39
    9.14     Expenses.......................................................39
    9.15     Gender.........................................................39
    9.16     Publicity......................................................39
    9.17     Counterparts...................................................39


                                     - iii -

<PAGE>



                                INDEX TO EXHIBITS

   EXHIBIT A         --  Form of Bill of Sale
   EXHIBIT B         --  Form of Assignment and Assumption Agreement
   EXHIBIT C         --  Forms of Lease Assignment and Assumption Agreement
   EXHIBIT D         --  Form of Subordinated Non-Negotiable Promissory Note
   EXHIBIT E         --  Form of Escrow Agreement
   EXHIBIT F         --  Form of Security Agreement
   EXHIBIT G         --  Form of Subordination Agreement
   EXHIBIT H         --  Form of Certification of Non-Foreign Status


                         INDEX TO SCHEDULES

   Schedule 1.1.2        --       Excluded Assets
   Schedule 1.2          --       Escrow Drawdown Schedule
   Schedule 1.3          --       Assumed Liabilities
   Schedule 1.4          --       Allocation of Purchase Price
   Schedule 2.3          --       Exceptions to Validity
   Schedule 2.5          --       Financial Reports
   Schedule 2.8          --       Powers of Attorney; Limitations on
                                  Competition; Guarantees
   Schedule 2.9          --       Significant Customers
   Schedule 2.10         --       Governmental Approvals
   Schedule 2.11         --       Adverse Changes
   Schedule 2.13         --       Non-Compliance with Laws
   Schedule 2.14         --       Employee Benefits
   Schedule 2.16         --       Insurance
   Schedule 2.17         --       Contracts
   Schedule 2.18         --       Leases
   Schedule 2.19         --       Intellectual Properties
   Schedule 2.20         --       Proprietary Information of Third Parties
   Schedule 2.22         --       Taxes
   Schedule 2.23         --       Litigation
   Schedule 2.24         --       Environmental Permits
   Schedule 5.1          --       Consents
   Schedule 5.3          --       Novated Contracts

                                     - iv -

<PAGE>



                            ASSET PURCHASE AGREEMENT


         THIS ASSET PURCHASE  AGREEMENT (this  "Agreement") is entered into this
16th day of October, 1997 and effective as the 1st day of October,  1997, by and
between STAR MOUNTAIN,  INC. (the "Buyer"),  a Virginia  corporation,  and ESSEX
CORPORATION (the "Seller"), a Virginia corporation.

                             PRELIMINARY STATEMENTS:

         The Seller,  through its Systems Effectiveness  Division, is engaged in
the  business  of  demining  training  and  training   systems,   human  factors
engineering, and nuclear courier transportation safeguards training; and

         The Seller  desires to sell or otherwise  transfer to the Buyer certain
of its assets and the aforementioned business conducted by it (the "Business").

           NOW THEREFORE,  in consideration of these preliminary  statements and
the mutual covenants,  representations,  warranties,  and agreements hereinafter
set forth,  and for other  good and  valuable  consideration,  the  receipt  and
sufficiency  of which are  hereby  acknowledged,  the  parties  hereby  agree as
follows:

1.         PURCHASE AND SALE OF ASSETS

           1.1    TRANSFER OF ASSETS

                  1.1.1  Upon the terms and subject to the  conditions set forth
                         in  this  Agreement,  as  of  the  Effective  Time  (as
                         hereinafter  defined),  or with respect to the Escrowed
                         Contracts (as hereinafter defined) upon the novation or
                         deemed   novation  of  same  in  accordance  with  this
                         Agreement,  including  Sections  1.1.3 and  1.1.4,  the
                         Seller shall  transfer to the Buyer,  free and clear of
                         all claims, charges, liens, contracts, rights, options,
                         security  interests,   mortgages,   encumbrances,   and
                         restrictions  whatsoever  (individually  a "Claim"  and
                         collectively,  "Claims"), all of the assets, properties
                         and  rights  owned by the Seller or in which the Seller
                         has  any   right  or   interest   of  every   type  and
                         description,  real,  personal  and mixed,  tangible and
                         intangible,  confirmed  or  contingent  relating to the
                         Business   (other   than  the   Excluded   Assets,   as
                         hereinafter  defined),  including,  without limitation,
                         business  agreements,  property,  inventory,  goodwill,
                         supplier  lists,  customer  lists,  prepaid  insurance,
                         licenses  and   permits,  processes,   service   marks,
                         know-how, show-how, trade secrets, licenses to software
                         (including,   without    limitation,    documentation),
                         computers  and  computer  equipment,  files  and  other
                         records, systems  and   processes,  security  deposits,
                         contracts, arrangements and

                                      - 1 -

<PAGE>



                         understandings,  oral and written, formal and informal,
                         for  work  to  be  performed   and/or  services  to  be
                         provided, interests in real estate, leasehold and other
                         improvements,     machines,    machinery,    equipment,
                         furniture,  fixtures,  supplies,  all rights and claims
                         under   insurance   policies  and  other  contracts  of
                         whatever  nature,  all  causes of  action,  claims  and
                         demands  of  every  nature   relating  to  the  Assumed
                         Liabilities and Contracts (as hereinafter defined), the
                         right to use the name "Systems Effectiveness  Division"
                         or  any  derivative  thereof,  and  all  other  assets,
                         properties,  and rights of every kind and nature  owned
                         by the Seller,  whether or not specifically referred to
                         in  this  Agreement  (collectively,   the  "Transferred
                         Assets"),  all with  the  intention  that the  Business
                         shall be  transferred  to the Buyer as a going concern.
                         Notwithstanding  any provision of this Agreement to the
                         contrary,  the Buyer  acknowledges  that on the Closing
                         Date, a Lease  Assignment and  Assumption  Agreement in
                         the form of EXHIBIT  C(2) with  respect to the premises
                         located at 1430 Springhill Rd., McLean,  Virginia, will
                         not have been  obtained.  The Seller  agrees to use its
                         best efforts to secure from TDP Corporation and deliver
                         to the  Buyer  such  Lease  Assignment  and  Assumption
                         Agreement,  executed by TDP Corporation and the Seller,
                         and until such time,  to take all such  measures as are
                         necessary  to mitigate  the impact of the  Seller's not
                         having  obtained such Lease  Assignment  and Assumption
                         Agreement  prior to Closing  (including but not limited
                         to allowing the Buyer to use the subject premises).

                  1.1.2  Notwithstanding  any provision of this Agreement to the
                         contrary,  there shall be excluded from the Transferred
                         Assets and retained by the Seller the assets  listed in
                         SCHEDULE 1.1.2 attached hereto and incorporated  herein
                         by reference (collectively, the "Excluded Assets").

                  1.1.3  Notwithstanding  any provision of this Agreement to the
                         contrary,  there shall be excluded from the Transferred
                         Assets  and   retained   by  the  Seller  all   assets,
                         contracts,  arrangements,  and understandings which are
                         not capable of being  transferred  or assigned  without
                         the approval or consent of any party thereto other than
                         the Seller or the  approval of a creditor of the Seller
                         if such  approval  or  consent  has not  been  obtained
                         (collectively,   the  "Contingent  Assets");  PROVIDED,
                         however, that the Seller and the Buyer agree that, upon
                         satisfaction  of the  conditions  set forth in  Section
                         1.1.4   hereof,   the   Contingent   Assets   shall  be
                         transferred  to  the  Buyer  in  accordance   with  the
                         provisions of Section  1.1.5 of this  Agreement and the
                         Contingent  Assets shall be deemed  Transferred  Assets
                         for all purposes under this Agreement;  notwithstanding
                         the foregoing,  the Buyer  acknowledges  that the Lease
                         Assignment   and   Assumption    Agreement   from   TDP
                         Corporation in the form of Exhibit C shall

                                      - 2 -

<PAGE>



                         be delivered to the Buyer in accordance with the second
                         paragraph of Section 1.1.1.

                  1.1.4  The Seller shall, at its own cost,  cause all contracts
                         listed on  SCHEDULE  5.3 to be  novated  in the name of
                         Buyer as soon as possible  after the Closing Date,  but
                         in no event later than ninety (90) days  following  the
                         Closing  Date;  PROVIDED  that Buyer  shall  reasonably
                         cooperate  with  Seller and  provide  such  information
                         regarding the Buyer as Seller shall reasonably  request
                         in order to novate such  contracts,  including  but not
                         limited  to  submission  to an audit  conducted  by the
                         Defense  Contract  Audit Agency.  Additionally,  if the
                         Federal  government or prime  contractor  (in the event
                         the  contract to be novated in the name of the Buyer is
                         a subcontract)  should  terminate for convenience  such
                         contract with the Seller and  thereafter  contract with
                         the Buyer for substantially the same project,  then, in
                         that event,  such contract shall be deemed to have been
                         novated to the  Buyer,  notwithstanding  any  provision
                         herein  to  the  contrary,  and  the  Seller  shall  be
                         entitled  to payment for such  contract  in  accordance
                         with  the  amount  set  forth  on  SCHEDULE  1.2.  Each
                         contract  listed on SCHEDULE  5.3 (other than  Contract
                         No.  NAS9-97022,  Grant No. 1 R43  AG14316-01 and Grant
                         No.  AA11608-1)  shall,  until such time as it has been
                         novated as  aforesaid,  be fully  subcontracted  to the
                         Buyer  at  provisional  rates  except  for  direct  and
                         indirect costs (to the extent provided in the following
                         sentence)  properly  incurred  by the  Seller  prior to
                         Closing  (each such  subcontract  to be effective as of
                         the Effective Date).  Notwithstanding  anything in this
                         Agreement  to the  contrary,  the Seller  agrees not to
                         claim any  indirect  costs  with  respect to any of the
                         contracts   listed  in   SCHEDULE   5.3  in  excess  of
                         provisional  contract costs and then,  only when and to
                         the  extent  funds to cover  such  costs are  available
                         after payment of all amounts due the Buyer with respect
                         to the subject  contract (any of the  foregoing  claims
                         for such costs by the Seller to be  subordinate  in all
                         respects to the claims of the Buyer).

                  1.1.5  The Seller  shall  transfer the  Transferred  Assets to
                         the  Buyer  at  Closing  pursuant  to a Bill of Sale in
                         substantially  the form of EXHIBIT A, an Assignment and
                         Assumption  Agreement  in  substantially  the  form  of
                         EXHIBIT B, Lease Assignment and Assumption Agreement in
                         substantially the forms of EXHIBIT C(1), C(2) AND C(3),
                         and  such  other   documents  and  instruments  as  are
                         necessary to give effect to the  transfer,  conveyance,
                         and assignment of the  Transferred  Assets as the Buyer
                         or its counsel may reasonably request.

                  1.1.6  At any time and from  time to time  after  the  Closing
                         Date,  at the request of the Buyer and without  further
                         consideration,  the Seller  shall  execute  and deliver
                         such other instruments of sale,  transfer,  conveyance,
                         assignment,  and  confirmation  as  may  be  reasonably
                         requested in order to more effectively

                                      - 3 -

<PAGE>



                         transfer, convey, and  assign  to  the  Buyer  and  to
                         confirm  the Buyer's title to  the Transferred  Assets.

   1.2            CONSIDERATION FOR THE TRANSFERRED ASSETS
                  The total  consideration  for the  Transferred  Assets and the
                  Business to be paid to the Seller shall be equal to the sum of
                  $1,475,000 (the "Estimated Purchase Price"), subject to
                  adjustment as follows:

                  1.2.1  The  Estimated  Purchase  Price shall be  increased  or
                         decreased,  dollar for  dollar,  by the amount by which
                         the  net  worth  of  the  Transferred   Assets  at  the
                         Effective  Date is greater or less than,  respectively,
                         the sum of $522,381  which  number  represents  the net
                         worth as of August 31, 1997.

                  1.2.2  [reserved]

                  The Estimated Purchase Price shall be payable as follows:

                  1.2.3  The  deposit  in the  amount  of two  hundred  thousand
                         dollars ($200,000) delivered to Seller on July 14, 1997
                         shall be deemed paid to the Seller.

                  1.2.4  [reserved]

                  1.2.5  Payments by wire  transfer at Closing for and on behalf
                         of the Seller to Signet  Bank/Virginia in the amount of
                         two hundred sixty four thousand Dollars  ($264,000) and
                         F&M Bank in the amount of  $61,000,  all in  accordance
                         with wiring instructions  provided and certified by the
                         Seller at Closing.

                  1.2.6  The  principal   amount  of  $325,000  plus   interest,
                         payable  in  fifteen  (15) equal  monthly  payments  of
                         principal  and  interest  in the  amount of twenty  two
                         thousand  nine hundred  eighty nine Dollars  ($22,989),
                         represented by a secured, subordinated,  non-negotiable
                         promissory  note payable to the Seller plus interest at
                         nine  percent (9%) per annum (the  "Promissory  Note"),
                         the form of which is attached  hereto as EXHIBIT D. The
                         payments under the Promissory  Note shall be secured as
                         provided in the Security  Agreement and subordinated in
                         accordance with Section 1.6.

                  1.2.7  An amount  equal to six hundred  twenty  five  thousand
                         Dollars ($625,000) shall be deposited by the Buyer into
                         an escrow  account on the Closing  Date (the  "Escrowed
                         Funds") to be retained, paid to the Seller, returned to
                         the Buyer or  otherwise  held in  accordance  with that
                         certain  Escrow  Agreement  in the  form of  EXHIBIT  E
                         hereto,  to be executed and  delivered by the Buyer and
                         the Seller at Closing.

                                      - 4 -

<PAGE>




                         Within twenty (20) days following the Closing Date, the
                         Seller  and  the  Buyer  shall  jointly  determine  the
                         adjustment to the Purchase Price,  if any,  pursuant to
                         Section  1.2.1.  If the Purchase  Price is greater than
                         the Estimated  Purchase Price, then the Buyer shall pay
                         to the Seller by certified check the difference between
                         the Purchase  Price and the  Estimated  Purchase  Price
                         within five (5) business days  following  determination
                         of the Purchase Price. If the Estimated  Purchase Price
                         is greater  than the  Purchase  Price,  then the Seller
                         shall  pay  to  the  Buyer  by   certified   check  the
                         difference between the Purchase Price and the Estimated
                         Purchase   Price   within   five  (5)  days   following
                         determination of the Purchase Price;  PROVIDED that, at
                         the Buyer's  option,  such amount may be deducted  from
                         the Escrowed Funds.

   1.3    ASSUMPTION OF LIABILITIES

                  1.3.1  The only  obligations  and liabilities to be assumed by
                         the Buyer in  connection  with its  acquisition  of the
                         Transferred Assets (the "Assumed  Liabilities") are the
                         obligations  and  liabilities  specifically  listed  on
                         SCHEDULE 1.3 and obligations  and  liabilities  arising
                         after the Effective Time,  including  obligations under
                         executory  contracts  listed on  SCHEDULE  1.3  arising
                         after the Effective  Time  (provided such contracts are
                         not in  default  and are  assigned  in  writing  by the
                         Seller with the  written  consent of the other party or
                         parties thereto, if necessary, and are delivered to the
                         Buyer on or prior to the Effective Time).

                  1.3.2  The  Buyer  shall   assume  the   Assumed   Liabilities
                         pursuant to the  Assignment  and  Assumption  Agreement
                         substantially  in the form of  EXHIBIT  B and the Lease
                         Assignment and Assumption  Agreement  substantially  in
                         the form of EXHIBIT C. The Seller shall  remain  liable
                         for  the   payment   of  all  other   liabilities   and
                         obligations   of  the  Seller  which  accrue  prior  or
                         subsequent  to  the  Effective  Time.  Except  for  the
                         Assumed  Liabilities  in the  amount  and to the extent
                         provided in this  Section 1.3 (if such amount or extent
                         is stated  therein),  the Buyer  shall not assume or be
                         responsible  for any other  liabilities  or obligations
                         which  relate  in any  manner to the  operation  of the
                         Business  prior to the Effective  Time,  and the Seller
                         shall  indemnify,  defend,  and hold the Buyer harmless
                         from all of such  obligations  and  liabilities  as set
                         forth  in  Section  8.2  below.   Operating   expenses,
                         including  without  limitation  rent payable under real
                         estate and equipment leases, staff commissions,  unpaid
                         vacation and holiday pay, and rebates to customers  for
                         which bills are  received  or payment  became due after
                         the  Effective  Time with respect to periods both prior
                         to and after the  Effective  Date will be  allocated to
                         each of the Seller  and the Buyer on a  pro-rata  basis
                         according to the ratio of pre-  Effective  Time days to
                         post-Effective Time days; promptly upon receipt of

                                     - 5 -

<PAGE>



                         notice  from one party of amounts so  allocated  to the
                         other,  the party to whom  notice  was  directed  shall
                         remit full payment therefor to the other party.

   1.4    ALLOCATION OF PURCHASE PRICE

          The  considerations  paid and the  liabilities  assumed  by the  Buyer
          pursuant to Sections  1.2 and 1.3 above shall be  allocated  among the
          Transferred  Assets  purchased  hereunder as set forth on SCHEDULE 1.4
          attached  hereto,  the  amounts  set forth  thereon to be  modified in
          amounts  mutually  agreeable  to the Buyer and the Seller to take into
          account any adjustments to the Estimated  Purchase Price made pursuant
          to this  Agreement.  The Seller and the Buyer each hereby covenant and
          agree  that  neither  of them will take a  position  on any income tax
          return,  before any governmental agency, or in any judicial proceeding
          that is in any way  inconsistent  with  the  allocation  set  forth on
          SCHEDULE 1.4. Each party shall duly and timely file Form 8594 with its
          appropriate tax returns.

   1.5    SECURITY AGREEMENT

          The  obligation  of the Buyer to make payment due under  Section 1.2.6
          shall be secured pursuant to the terms of a Security  Agreement in the
          form of EXHIBIT F hereto,  to be  executed by the Buyer and the Seller
          at Closing.

   1.6    SUBORDINATION TO ALL SENIOR FINANCING

          All  payments  under  the Note  and the  Security  Agreement,  and the
          security  provided to the Seller  pursuant to this  Agreement  and the
          Security  Agreement shall be subordinate in all respects to all Senior
          Financing.  For purposes of this Agreement,  "Senior  Financing" shall
          mean (i) all financing of any nature (excluding  operating and capital
          leases and purchase money security interest financing) obtained by the
          Buyer,  the aggregate  outstanding  principal of which does not exceed
          the sum of four million five hundred  thousand  Dollars  ($4,500,000),
          (ii) all operating and capital leases,  (iii) all other  extensions of
          credit which are secured by a purchase money security  interest,  (iv)
          all  financing  secured  or to be  secured by the shares of any entity
          which was or is acquired by the Buyer, in which entity the Buyer holds
          or will hold a controlling  interest,  (v) up to $200,000 in any types
          of  encumbrances  of the Buyer's assets other than those  described in
          (i) through (iv) which are in existence as of the Effective  Date, and
          (vi) all circumstances giving rise to any liens or encumbrances on the
          Buyer's  assets of any nature which are contested by the Buyer in good
          faith.  The  Seller  agrees to  execute  and  deliver  to the Buyer at
          Closing a Subordination Agreement in the form of EXHIBIT G. The Seller
          further  agrees  upon the  request of the Buyer to execute and deliver
          all such  additional  agreements  and  documents as may be  reasonably
          required by any third party now or hereafter providing Senior

                                      - 6 -

<PAGE>



          Financing to evidence the aforementioned  subordination of payment and
          security interest.

2.        REPRESENTATIONS AND WARRANTIES OF SELLER

          As an  inducement  to the Buyer to enter  into this  Agreement  and to
          consummate the transactions contemplated hereby, the Seller represents
          and warrants to the Buyer,  as of the  Effective  Date, as of the date
          hereof and as of the Closing Date, as follows:

   2.1    ORGANIZATION AND QUALIFICATION

          The Seller is a corporation  duly organized,  validly  existing and in
          good  standing  under the laws of the  Commonwealth  of Virginia.  The
          Seller is  qualified to do business in the  Commonwealth  of Virginia,
          the  State of  Florida,  the  State of New  Mexico,  and the  State of
          Alabama. The nature of the Business or the Transferred Assets does not
          require the Seller to be licensed or qualified in any  jurisdiction in
          which the failure to so qualify would have a material  adverse  effect
          on the  Business  or the  Transferred  Assets.  The  Seller  has  made
          available to the Buyer  complete and correct copies of the Articles of
          Incorporation and By-laws of the Seller as currently in effect.

   2.2    CORPORATE POWER AND AUTHORITY

          The Seller has the  corporate  power and authority to own and hold its
          properties and to carry on its business as now  conducted,  including,
          to the best of the Seller's knowledge and belief, the right to use the
          name "Systems Effectiveness Division." The Seller:

                  2.2.1  has the  corporate  power  and  authority  to  execute,
                         deliver,  and perform  this  Agreement  (including  the
                         Exhibits  and  the  Schedules  hereto)  and  the  other
                         documents   and   instruments    contemplated    hereby
                         (collectively,   this   Agreement,   the  Exhibits  and
                         Schedules   hereto,   and  the  other   documents   and
                         instruments  contemplated  hereby,  including  but  not
                         limited to the Non-  negotiable  Promissory  Note,  the
                         Assignment   and   Assumption   Agreement,   the  Lease
                         Assignment  and Assumption  Agreement,  and the Bill of
                         Sale shall constitute the "Documents")and to consummate
                         the transactions contemplated hereby and thereby;

                  2.2.2  has  taken  all  necessary  corporate  and  shareholder
                         action  to   authorize   and  approve  the   execution,
                         delivery,  and  performance  of this  Agreement and the
                         other   Documents   and   the   consummation   of   the
                         transactions contemplated hereby and thereby; and


                                      - 7 -

<PAGE>


                  2.2.3  has  duly  and  validly  executed  and  delivered  this
                         Agreement and the other  Documents  and this  Agreement
                         and the other  Documents  constitute  valid and binding
                         obligations  of the  Seller,  enforceable  against  the
                         Seller in accordance with their terms.

   2.3    VALIDITY,  ETC.

          Except  as set  forth on  SCHEDULE  2.3,  neither  the  execution  and
          delivery of this Agreement or the other Documents, the consummation of
          the transactions  contemplated hereby or thereby,  nor the performance
          of this Agreement or the other Documents by the Seller will:

                  2.3.1  violate,  conflict  with or result in any breach of any
                         trust  agreement,  articles  of  incorporation,  bylaw,
                         judgment,   decree,   order,   statute,  or  regulation
                         applicable to the Seller;

                  2.3.2  violate,  conflict with or result in a breach, default,
                         or   termination   or  give   rise  to  any   right  of
                         termination,   cancellation,  or  acceleration  of  the
                         maturity of any payment date of any of the  obligations
                         of the  Seller or  increase  or  otherwise  affect  the
                         obligations   of  the  Seller  under  any  law,   rule,
                         regulation,    or   any   judgment,    decree,   order,
                         governmental  permit,  license,  or order or any of the
                         terms,  conditions,  or  provisions  of  any  mortgage,
                         indenture,   note,   license,   agreement,   or   other
                         instrument  or  obligation  related to the Seller or to
                         the Seller's  ability to  consummate  the  transactions
                         contemplated   hereby  or  thereby,   except  for  such
                         defaults (or rights of  termination,  cancellation,  or
                         acceleration) as to which requisite waivers or consents
                         have been or as of the Closing Date will be obtained in
                         writing and provided to the Buyer;

                  2.3.3  violate any order, writ, injunction,  decree,  statute,
                         rule, or regulation applicable to the Seller; or

                  2.3.4  result  in  the   creation   of  any  Claim   upon  the
                         Transferred Assets.

  2.4     BOOKS AND RECORDS

          The minute books of the Seller,  the  relevant  portions of which have
          been or will be made  available to the Buyer and its  representatives,
          contain  materially  accurate records of all meetings of and corporate
          actions or written consents by the shareholders and Board of Directors
          of the Seller relating to the Business or the  Transferred  Assets set
          forth in such  minute  books  during  the  period of  January  1, 1993
          through the date of this Agreement.

                                      - 8 -
<PAGE>



  2.5     FINANCIAL STATEMENTS

          The Seller has previously  furnished to the Buyer, and attached hereto
          as  SCHEDULE  2.5 are the  Seller's  SEC  Form  10-KSB  Annual  Report
          Quarterly Filings dated December 29, 1996, and quarterly reports filed
          for SEC Form 10-QSB's for the period ended March 30, 1997 and June 29,
          1997,  on  file  with  the  United  States   Securities  and  Exchange
          Commission,  and the unaudited  balance sheet of the Seller's  Systems
          Effectiveness  Division  (the  "Balance  Sheet") as of August 31, 1997
          (the "Balance Sheet Date"). All such financial reports (the "Financial
          Reports")  have been  prepared  in good faith in  accordance  with the
          books and records of the Seller, and accurately and fairly present the
          financial position and results of operations of the Seller as of their
          respective  dates and for their  respective  periods.  Such statements
          were not necessarily  prepared in accordance  with generally  accepted
          accounting  principles.   Such  books  and  records  relating  to  the
          Transferred  Assets and the  Business  are complete and correct in all
          material   respects,   accurately  reflect  all  transactions  of  the
          Business, and have been made available to the Buyer for examination.
          Since the Balance Sheet Date:

                  2.5.1  there has been no change in the assets, liabilities, or
                         financial    condition   of   the   Seller's    Systems
                         Effectiveness  Division  from  that  reflected  in  the
                         Balance Sheet except for changes in the ordinary course
                         of business  consistent  with past  practice  and which
                         have not been materially adverse; and

                  2.5.2  none of the business,  prospects,  financial condition,
                         operations, property or affairs of the Seller's Systems
                         Effectiveness  Division has been  materially  adversely
                         affected by any occurrence or development, individually
                         or in the  aggregate,  whether or not insured  against.
                         The  Seller  has  disclosed  to the Buyer all  material
                         facts  relating  to the  preparation  of the  Financial
                         Reports to the extent  they  relate to the  Business or
                         the Transferred Assets.


  2.6     ABSENCE OF UNDISCLOSED LIABILITIES

          The Seller is not bound by any agreement, or subject to any charter or
          other corporate restriction or any legal requirement, which has, or in
          the future can  reasonably  be  expected to have,  a material  adverse
          effect on the Business or the Transferred Assets.

  2.7     LABOR AND EMPLOYEE RELATIONS

          The  Seller  is not a party to or bound by any  collective  bargaining
          agreement with any labor organization,  group, or association covering
          any of its  employees,  and the Seller has no knowledge of any attempt
          to organize  the  Seller's  employees  by any Person,  unit,  or group
          seeking to act as their bargaining agent.  There are no pending or, to
          the best  knowledge of the Seller,  threatened  charges (by employees,
          their

                                      - 9 -

<PAGE>



          representatives,   or   governmental   authorities)  of  unfair  labor
          practices or of  employment  discrimination  or of any other  wrongful
          action with respect to any aspect of employment of any person employed
          or  formerly  employed  by the Seller.  To the best  knowledge  of the
          Seller, no union representation  election relating to employees of the
          Seller has been scheduled by any governmental agency or authority,  no
          organizational  effort  is  being  made  with  respect  to any of such
          employees,  and there is no investigation  of the Seller's  employment
          policies or practices by any governmental  agency or authority pending
          or threatened.  The Seller is not currently, nor has it been, involved
          in labor  negotiations  with any unit or group  seeking  to become the
          bargaining  unit for any  employees of the Seller.  The Seller has not
          experienced any material work stoppages,  and to the best knowledge of
          the Seller, no work stoppage is planned.

  2.8     POWERS OF ATTORNEY; ABSENCE OF LIMITATIONS ON COMPETITION; GUARANTEES

          With respect to the Business or the Transferred Assets,  except as set
          forth in SCHEDULE 2.8:

                  2.8.1  no power of attorney or similar  authorization given by
                         the Seller presently is in effect or outstanding;

                  2.8.2  no contract or agreement to which the Seller is a party
                         or is bound or to which  the  Business  or  Transferred
                         Assets is subject  limits the  freedom of the Seller to
                         compete in any line of business or with any Person,  to
                         the  extent  same   relates  to  the  Business  or  the
                         Transferred Assets; and

                  2.8.3  the Seller is not a party to or bound by any  guarantee
                         of any debt or obligation of any other Person.

  2.9     SIGNIFICANT  CUSTOMERS

          Set forth on SCHEDULE  2.9 is a true and correct  list of the Seller's
          six (6) largest  customers of the Business for the most recent  twelve
          month  period  ending  December 29, 1996  together  with the amount of
          services  attributable to such customers expressed in dollars and as a
          percentage  of  total  sales  and  services.  Except  as set  forth in
          SCHEDULE  2.9,  none of the  customers  identified on SCHEDULE 2.9 has
          terminated,  materially  reduced,  or to  the  best  knowledge  of the
          Seller,  threatened to terminate or materially  reduce its request for
          services of the Seller during the period covered by such schedule.




                                     - 10 -

<PAGE>



  2.10   GOVERNMENTAL  APPROVALS/FILINGS

          Except as set forth in SCHEDULE 2.10, no registration or filing by the
          Seller with,  or consent or approval for the Seller of or other action
          by,   any   Federal,   state,   or  other   governmental   agency   or
          instrumentality  is or will be  necessary  for  the  valid  execution,
          delivery, and performance by the Seller of this Agreement.

  2.11    ABSENCE OF ADVERSE CHANGE; CONDUCT OF BUSINESS

          During the period from the  Balance  Sheet Date to and  including  the
          date of this  Agreement,  except as set forth on  SCHEDULE  2.11,  the
          Seller has not, relative to the Business or the Transferred Assets:

                 2.11.1  borrowed  or agreed to borrow  any  material  amount of
                         funds or incurred any  liability or  obligation  of any
                         nature  (whether  accrued,   absolute,   contingent  or
                         otherwise),  or  guaranteed  or agreed to guarantee any
                         obligations of others;

                 2.11.2  canceled any  indebtedness  owing to it or any claims
                         that it  might  have  possessed,  waived  any  material
                         rights   of   substantial   value  or   sold,   leased,
                         encumbered,  transferred  or otherwise  disposed of, or
                         agreed to sell, lease,  encumber,  or otherwise dispose
                         of its  assets  or  permitted  any of its  assets to be
                         subjected  to  any  mortgage,  pledge,  lien,  security
                         interest,  encumbrance,  restriction  or  charge of any
                         kind;
                 2.11.3  made any material  capital  expenditure or commitment
                         therefor;

                 2.11.4  increased its indebtedness for borrowed money or made
                         any  loan  to  any  Person;

                 2.11.5  written  off as  uncollectible  any  notes or  accounts
                         receivable, except write-offs in the ordinary course of
                         business [charged to applicable reserves];  2.11.6 made
                         any  material  change in any  method of  accounting  or
                         auditing practice;

                 2.11.7  otherwise  conducted its business or entered into any
                         transaction,  except in the usual and ordinary  manner;
                         or

                 2.11.8  agreed,  whether or not in writing,  to do any of the
                         foregoing.

  2.12    CERTAIN  PRACTICES  Neither the Seller,  nor any of its  directors  or
          officers,  or to the best knowledge of the Seller, its employees have,
          directly or indirectly, used any corporate funds for


                                     - 11 -

<PAGE>



          unlawful  contributions,   gifts,  entertainment,  or  other  unlawful
          expenses relating to political activity;  made any unlawful payment to
          foreign or domestic government officials or employees or to foreign or
          domestic political parties or campaigns from corporate funds; violated
          any  provision  of  applicable  law;  established  or  maintained  any
          unlawful or unrecorded fund of corporate monies or other assets;  made
          any false or fictitious entry on the books or records of the Seller or
          any subsidiary;  made any bribe,  rebate,  payoff,  influence payment,
          kickback,  or other unlawful payment; or made any bribe,  kickback, or
          other payment of a similar or  comparable  nature,  whether  lawful or
          not, to any person or entity,  private or public,  regardless of form,
          whether in money,  business,  or to obtain special concessions,  or to
          pay for  favorable  treatment  for  business  secured  or for  special
          concessions already obtained.

  2.13    COMPLIANCE WITH LAW; LICENSES AND PERMITS

          Except as set forth on SCHEDULE  2.13,  the Seller has complied in all
          material  respects  with all  laws,  ordinances,  legal  requirements,
          rules,  regulations,  and orders  applicable  to it,  its  operations,
          properties,  assets,  products,  and services.  Except as set forth on
          SCHEDULE 2.13, there is no existing law, rule,  regulation,  or order,
          and the Seller is not aware of any proposed law, rule, regulation,  or
          order,  whether  Federal,  state,  or local,  which would  prohibit or
          materially restrict the Buyer from, or otherwise  materially adversely
          affect the Buyer in,  conducting the Business in the manner heretofore
          conducted by the Seller in any  jurisdiction  in which the Business is
          now conducted. The Seller possesses all franchises, permits, licenses,
          certificates,   and  consents   required  from  any   governmental  or
          regulatory  authority in order for the Seller to carry on the Business
          as currently  conducted and to own and operate the Transferred  Assets
          as now owned and operated,  the failure of which to possess would have
          a material adverse effect on the Business or the Transferred Assets.

  2.14    EMPLOYEE BENEFITS


                 2.14.1  Set forth on SCHEDULE  2.14 is a list of all pension,
                         profit  sharing,  retirement,   deferred  compensation,
                         multi   employer  (as  defined  under   ERISA),   stock
                         purchase,  stock option,  incentive,  bonus,  vacation,
                         severance,   disability,    hospitalization,    medical
                         insurance, life insurance, fringe benefit, welfare, and
                         other employee benefit plans, programs, or arrangements
                         pursuant  to which the  Seller or its ERISA  Affiliates
                         provides  (directly  or  indirectly,  individually,  or
                         jointly through others)  benefits or compensation to or
                         on  behalf of  employees  or  former  employees  of the
                         Seller  or its  ERISA  Affiliates,  whether  formal  or
                         informal,  whether or not written ("Employee Plan"). On
                         request by the Buyer,  the Seller shall  furnish a copy
                         of  each  Employee  Plan  and a  copy  of  any  related
                         materials. The Seller will maintain the benefits listed
                         on SCHEDULE  2.14 in full force and effect  through the
                         Effective  Time.  The Buyer shall have no obligation or
                         liability of any kind

                                     - 12 -

<PAGE>



                         or nature for any  compensation or benefits of any kind
                         or nature to the employees or consultants of the Seller
                         for services rendered prior to the Effective Time.

                 2.14.2  Neither the Seller nor any of its ERISA Affiliates is
                         or  has  been  a  participant  in,  or is or  has  been
                         obligated  to maintain or to make  contributions  to, a
                         multi-employer   plan  (within  the  meaning  of  ERISA
                         Section  3(37)  and  ERISA  Section  4001(a)(3))  or an
                         Employee  Plan  which is  subject to Title IV of ERISA.
                         Neither  the  Seller  nor  any  ERISA   Affiliate   has
                         sponsored,  contributed  to,  or been  obligated  under
                         Title I or IV of  ERISA  to  contribute  to a  "defined
                         benefit plan" (as defined in ERISA Section 3(35)).

                 2.14.3  Neither  the  Seller  nor  its  ERISA  Affiliates  have
                         entered into any contract,  agreement,  or  arrangement
                         (whether oral or written) under which the Seller or its
                         ERISA Affiliates have assumed any liability relating to
                         their clients'  retirement  plans,  nor have the Seller
                         and/or   its   ERISA   Affiliates   made   any   verbal
                         representations  that the use of any  employees  of the
                         Seller or its ERISA  Affiliates  would  have no adverse
                         consequence on such client retirement plans.


                 2.14.4  Neither  the  Seller  nor its ERISA  Affiliates  have
                         engaged in employee  leasing as defined in this Section
                         2.14.4. Employee leasing is defined solely for purposes
                         of this  Section  2.14.4  to mean the  placement  by an
                         employer (customer) of all or most of its existing work
                         force onto the payroll of an employee  leasing firm and
                         an explicit  co-employment  relationship  following the
                         termination-lease back.

                 2.14.5  For  purposes of this  Section  2.14,  the term "ERISA"
                         shall mean the Employee  Retirement Income Security Act
                         of 1974,  as amended,  and the term  "ERISA  Affiliate"
                         shall  mean  each  trade or  business  (whether  or not
                         incorporated) which together with the Seller is treated
                         as a single  employer under Section  414(b),  (c), (m),
                         (o) or (t) of the Code.

  2.15    FIXED  ASSETS

          The list of Fixed Assets for the Period Ending  08/31/97,  prepared by
          the Seller,  contains a true and complete  list of all of the Seller's
          fixed assets  relating to the Business,  whether owned or leased.  The
          Seller  has  good and  marketable  title  to all of its  fixed  assets
          relating  to the  Business,  free  and  clear  of all  claims,  liens,
          mortgages,  charges,  and  encumbrances  except  as  disclosed  in the
          Balance  Sheet.  All of the  Seller's  fixed  assets  relating  to the
          Business,  whether  owned or leased,  are  adequate and usable for the
          purposes for which they are currently  used and are in good  operating
          condition and repair, normal wear and tear excepted.

                                     - 13 -

<PAGE>




  2.16    INSURANCE

          The Seller is, and will be through the  Effective  Time,  insured with
          insurers in respect of its properties,  assets,  and businesses as set
          forth on the attached SCHEDULE 2.16. SCHEDULE 2.16 lists the insurance
          coverage  carried by the Seller,  which  insurance will remain in full
          force and effect  with  respect to all events  occurring  prior to the
          Effective Time.

  2.17    OUTSTANDING CONTRACTS

          SCHEDULE  2.17 sets forth a  description  of all  existing  contracts,
          agreements, leases, commitments, licenses, and franchises, relating to
          the Business and the Transferred Assets,  which involve obligations or
          commitments  by the Seller of $1,000 or more and are not cancelable by
          the Seller without penalty within 30 days (collectively  "Contracts"),
          whether written or oral. The Seller has delivered or made available to
          the Buyer true,  correct,  and complete copies of all of the Contracts
          specified  on SCHEDULE  2.17 which are in writing,  and such  schedule
          sets forth a complete  description  of all Contracts  which are not in
          writing.  All of the  Contracts  are in  full  force  and  effect  and
          enforceable in accordance with their terms,  except to the extent that
          the enforceability thereof may be subject to or affected by applicable
          bankruptcy,   insolvency,   fraudulent   conveyance,   reorganization,
          moratorium,  or other  laws  relating  to or  affecting  the rights of
          creditors generally.  Except as set forth on SCHEDULE 2.17, the Seller
          and, to the best knowledge of the Seller, each other party thereto has
          materially  performed all the obligations  required to be performed by
          it, has received no notice of default, and is not in default (with due
          notice or lapse of time or both) under any of the Contracts.

          The  Seller  has no  present  expectation  or  intention  of not fully
          performing all its  obligations  under each of the Contracts,  and the
          Seller has no  knowledge  of any breach or  anticipated  breach by the
          other  party to any of the  Contracts  to which the Seller is a party.
          Except as set forth on SCHEDULE  2.17,  none of the Contracts has been
          terminated;  no  notice  has been  given by any party  thereto  of any
          alleged default by any party  thereunder;  and the Seller is not aware
          of any intention or right of any party to declare another party to any
          of the  Contracts  to be in  default.  Except as set forth on SCHEDULE
          2.17,  there exists no actual or, to the best knowledge of the Seller,
          threatened  termination,  cancellation,  or limitation of the business
          relationship of the Seller by any party to any of the Contracts.

  2.18    OUTSTANDING LEASES

          SCHEDULE 2.18 sets forth a description  of each agreement by which the
          Seller leases each parcel of real property (the "Leased Parcels") used
          in connection with the

                                     - 14 -

<PAGE>



          Business  (collectively,  the  "Leases").  The Seller has delivered or
          made available to the Buyer true, correct,  and complete copies of all
          of the Leases  specified  on  SCHEDULE  2.18.  All rents due under the
          Leases have been paid.  All of the Leases are in full force and effect
          and enforceable in accordance  with their terms,  except to the extent
          that the  enforceability  thereof  may be  subject to or  affected  by
          applicable    bankruptcy,     insolvency,    fraudulent    conveyance,
          reorganization, moratorium, or other laws relating to or affecting the
          rights of creditors  generally.  Except as set forth on SCHEDULE 2.18,
          the Seller and, to the best knowledge of the Seller,  each other party
          thereto has performed all the obligations  required to be performed by
          it, has received no notice of default, and is not in default (with due
          notice or lapse of time or both) under any of the  Leases.  The Seller
          has no present  expectation  or intention of not fully  performing all
          its obligations  under each of the Leases prior to the Effective Time,
          and the Seller has no knowledge of any breach or anticipated breach by
          the other party to any of the Leases.  Except as set forth on SCHEDULE
          2.18, none of the Leases has been terminated; no notice has been given
          by any party thereto of any alleged  default by any party  thereunder;
          and the Seller is not aware of any  intention or right of any party to
          declare  another  party to any of the Leases to be in  default.  There
          exists no actual or, to the best  knowledge of the Seller,  threatened
          termination,  cancellation, or limitation of the business relationship
          of the Seller with any party to any of the Leases.

  2.19    INTELLECTUAL PROPERTIES

          SCHEDULE  2.19  contains an accurate and complete list of all domestic
          and foreign  letters  patent,  patents,  patent  applications,  patent
          licenses,  software  licenses  and  know-how  licenses,  trade  names,
          trademarks,   copyrights,   unpatented   inventions,   service  marks,
          trademark  registrations and applications,  service mark registrations
          and applications and copyright  registrations and applications,  trade
          secrets, or other confidential  proprietary  information owned or used
          by the  Seller in the  operation  of the  Business  (collectively  the
          "Intellectual  Property").  Except as set forth on  SCHEDULE  2.19 and
          except for commercial software licensed for use on personal computers,
          the Seller owns the entire  right,  title,  and interest in and to the
          Intellectual  Property,  trade  secrets,  and  technology  used in the
          operation of its business. Except as set forth on SCHEDULE 2.19, there
          have been and are no pending or, to the best  knowledge of the Seller,
          threatened proceedings or litigation or other adverse claims affecting
          or with respect to the  Intellectual  Property.  There is, to the best
          knowledge of the Seller, no reasonable basis upon which a claim may be
          asserted  against  the  Seller for  infringement  of any  domestic  or
          foreign letters patent, patents, patent applications,  patent licenses
          and  know-how  licenses,  trade  names,  trademark  registrations  and
          applications,  common law  trademarks,  service  marks,  service  mark
          registrations or applications or copyrights,  copyright  registrations
          or  applications,  trade secrets,  or other  confidential  proprietary
          information.  To the  best  knowledge  of the  Seller,  no  Person  is
          infringing the Intellectual Property.

                                     - 15 -

<PAGE>




  2.20    PROPRIETARY INFORMATION OF THIRD PARTIES

          Except as disclosed on SCHEDULE  2.20,  no third party has claimed or,
          to the best  knowledge  of the  Seller,  has  reason to claim that any
          Person  employed by or consulting with the Seller  ("Related  Person")
          has:

                 2.20.1  violated  or may  be  violating  any of  the  terms or
                         conditions     of     such     person's    employment,
                         non-competition,  or non-disclosure agreement with such
                         third party;

                 2.20.2  disclosed  or may  be  disclosing   or utilized or may
                         be   utilizing   any  trade   secret   or  proprietary
                         information  or documentation  of such third party, or

                 2.20.3  interfered or may  be  interfering  in  the  employment
                         relationship  between  such third  party and any of its
                         present  or  former  employees.   No  third  party  has
                         requested  information  from the Seller which  suggests
                         that  such a claim  might be  contemplated.  Except  as
                         disclosed on SCHEDULE  2.20,  to the best  knowledge of
                         the Seller,  no Related Person has employed or proposes
                         to  employ  any  trade  secret  or any  information  or
                         documentation  proprietary to any former  employer and,
                         no  Related   Person  has  violated  any   confidential
                         relationship  which  such  person may have had with any
                         third party,  in connection  with the  development,  or
                         sale of any service of the  Seller,  and the Seller has
                         no reason to believe there will be any such  employment
                         or violation.

  2.21    TRANSACTIONS WITH AFFILIATES

          No director,  officer or shareholder  of the Seller,  or member of the
          family of any such person, or any corporation,  partnership, trust, or
          other entity controlled by any of the foregoing persons, is a party to
          any  transaction  with the  Seller  relating  to the  Business  or the
          Transferred  Assets,  including  any  contract,  agreement,  or  other
          arrangement  providing for the employment  of,  furnishing of services
          by, rental of real or personal  property from, or otherwise  requiring
          payments or involving other obligations to any such person or firm.

  2.22    TAXES

          Except as set forth on SCHEDULE 2.22, all federal,  state,  local, and
          foreign tax returns and tax reports required to be filed by the Seller
          on or  before  the  date  hereof  have  been  timely  filed  with  the
          appropriate  governmental  agencies in all jurisdictions in which such
          returns and reports are required to be filed and all amounts  shown as
          owing  thereon  have  been  paid.   All  taxes   (including,   without
          limitation, income,

                                     - 16 -
<PAGE>



          accumulated earnings,  property,  sales, use, franchise,  value added,
          fuel, employees' income withholding,  and social security taxes) which
          have  become due or payable or are  required  to be  collected  by the
          Seller  or are  otherwise  attributable  to any  periods  ending at or
          before the  Effective  Time and all  interest and  penalties  thereon,
          whether  disputed  or not,  have  been paid or will be paid in full or
          adequately and properly reflected on the Balance Sheet or the Seller's
          books and records on or prior to the Closing Date. Except as set forth
          on  SCHEDULE  2.22,  all  deposits  required  by law to be made by the
          Seller with  respect to  employees'  withholding  taxes have been duly
          made,  and as of the Closing Date all such deposits due will have been
          made.  Except as set forth on SCHEDULE 2.22, no examination of any tax
          return  of  the  Seller  is  currently  in  progress.   There  are  no
          outstanding  agreements or waivers  extending the statutory  period of
          limitations applicable to any such tax return.

  2.23    LITIGATION

          With respect to the Business or the Transferred Assets, or arising out
          of or in any way  relating to the  Transferred  Assets,  except as set
          forth on SCHEDULE 2.23, there is no:

                 2.23.1  action,  suit,  claim,  proceeding,  or investigation
                         pending  or,  to the  best  knowledge  of  the  Seller,
                         threatened  against or affecting the Seller (whether or
                         not such the  Seller  is a party or  prospective  party
                         thereto),  at law or in  equity,  or  before  or by any
                         Federal,   state,   municipal,  or  other  governmental
                         department,   commission,  board,  bureau,  agency,  or
                         instrumentality, domestic or foreign;

               2.23.2    arbitration proceeding pending relating to the Seller;

               2.23.3    governmental inquiry  pending or threatened against or
                         involving the Seller,  and there is no basis for any of
                         the foregoing.  The Seller has not received any opinion
                         or memorandum or legal advice from legal counsel to the
                         effect that it is exposed, from a legal standpoint,  to
                         any liability or disadvantage by reason of any specific
                         action or inaction on the part of the Seller  which may
                         be  material  to  the  business,  prospects,  financial
                         condition,  operations,  property  or  affairs  of  the
                         Seller; or

               2.23.4    other claim that would materially or adversely affect
                         the Business or the Transferred Assets

          There are no outstanding orders,  writs,  judgments,  injunctions,  or
          decrees served upon the Seller by any court,  governmental  agency, or
          arbitration  tribunal  against  the  Seller.  There  are no  facts  or
          circumstances  which may result in  institution  of any action,  suit,
          claim,  or  legal,   administrative,   or  arbitration  proceeding  or
          investigation

                                     - 17 -

<PAGE>



          against,  involving,  or  affecting  the  Seller  or the  transactions
          contemplated  hereby. The Seller is not in default with respect to any
          order, writ, injunction, or decree known to or served upon it from any
          court or of any  Federal,  state,  municipal,  or  other  governmental
          department,  commission,  board,  bureau,  agency, or instrumentality,
          domestic or foreign.  With respect to the Business or the  Transferred
          Assets,  except as disclosed on SCHEDULE  2.23,  there is no action or
          suit by the Seller pending or threatened against others.

  2.24    ENVIRONMENTAL MATTERS

              2.24.1     COMPLIANCE

                         The  Seller  and   all  those  properties  the  leases
                          for  which   are  contained  on  SCHEDULE  2.18  (the
                         "Leased Parcels") are in compliance with all applicable
                         laws,   rules,   regulations,    orders,    ordinances,
                         judgments,  and decrees of all governmental authorities
                         with respect to all environmental statutes,  rules, and
                         regulations.  Except as set forth on SCHEDULE 2.24, the
                         Seller has not received  notice of, nor does the Seller
                         have knowledge of, any past, present, or future events,
                         conditions,   circumstances,   activities,   practices,
                         incidents,  actions,  or  plans  of the  Seller  or the
                         Seller's     predecessors,     either     collectively,
                         individually, or severally, which may interfere with or
                         prevent  continued  compliance  with, or which may give
                         rise to any common law or legal  liability or otherwise
                         form the basis of any claim, action, suit,  proceeding,
                         hearing,  or investigation,  based on or related to the
                         disposal, storage, handling,  manufacture,  processing,
                         distribution,  use,  treatment,  or  transport,  or the
                         emission,  discharge,  release,  or threatened  release
                         into the environment, of any Substance. As used in this
                         Section  2.24,  the term  "Substance"  or  "Substances"
                         shall   mean  any   pollutant,   hazardous   substance,
                         hazardous material, hazardous waste, or toxic waste, as
                         defined in any presently  enacted  federal,  state,  or
                         local   statute  or  any   regulation   that  has  been
                         promulgated  pursuant  thereto.  No  part of any of the
                         Leased  Parcels has been listed or proposed for listing
                         on the  National  Priorities  List  established  by the
                         United States  Environmental  Protection Agency, or any
                         other  such  list  by  any  federal,  state,  or  local
                         authorities.


              2.24.2     ENVIRONMENTAL SUBSTANCE LIABILITY

                         No event has occurred or condition  exists or operating
                         practice  is being  employed  that  could  give rise to
                         liability  on the  part of the  Seller,  either  at the
                         present  time  or  in  the  future,   for  any  losses,
                         liabilities,    damages   (whether   consequential   or
                         otherwise), settlements, penalties, interest, expenses,
                         and costs of responses, including any such liability on
                         account  of the right of any  governmental  or  private
                         entity or person, and including closure expenses,

                                     - 18 -

<PAGE>



                         costs of assessment,  containment, removal, or response
                         (other than monitoring or transportation or disposal of
                         materials  required to be transported or disposed of in
                         the ordinary  course of business  consistent  with past
                         practice) arising under any rule or federal,  state, or
                         local  statute,   or  any  regulation   that  has  been
                         promulgated  pursuant  thereto,  or  common  law,  as a
                         result of or in connection  with, or alleged to be as a
                         result of or in connection with, the following:


                           2.24.2.1     the       handling,    storage,    use,
                                        transportation,   or   disposal  of any
                                        Substances  in  or  near  or  from  the
                                        Leased Parcels;


                           2.24.2.2     the      handling,     storage,     use,
                                        transportation,   or   disposal  of  any
                                        Substances   by   the   Seller   or  its
                                        predecessors  which  Substances  were  a
                                        product,    by-product,   or   otherwise
                                        resulted from the  operations  conducted
                                        by or on  behalf  of the  Seller  or its
                                        predecessors;

                           2.24.2.3     any    intentional   or    unintentional
                                        emission,  discharge,  or release of any
                                        Substances in or near or from facilities
                                        into or upon  the  air,  surface  water,
                                        ground  water,  or land or any disposal,
                                        handling,   manufacturing,   processing,
                                        distribution,    use,   treatment,    or
                                        transport of such  Substances in or near
                                        or from  facilities  by or on  behalf of
                                        the Seller or its predecessors; or

                           2.24.2.4     the  presence of any toxic or  hazardous
                                        building  materials  (including  but not
                                        limited   to    asbestos    or   similar
                                        substances)  in  any  facilities  of the
                                        Seller, including but not limited to the
                                        inclusion  of  such   materials  in  the
                                        exterior  and  interior  walls,  floors,
                                        ceilings,  tile, insulation or any other
                                        portion of building structures.

             2.24.3      ENVIRONMENTAL PERMITS

                         The Seller has  obtained  and holds all  registrations,
                         permits, licenses, and approvals issued by or on behalf
                         of any federal,  state, or local  governmental  body or
                         agency  if  any  ("Environmental   Permits")  that  are
                         required in connection with the operation by the Seller
                         of the Leased  Parcels,  the  discharge  or emission of
                         Substances  by the Seller from the Leased  Parcels,  or
                         the generation,  treatment, storage, transportation, or
                         disposal of any such  Substances  by the  Seller.  Such
                         Environmental  Permits, which are described on SCHEDULE
                         2.24,  are currently  effective and  sufficient for the
                         operation of the Leased Parcels and the business of the
                         Seller  as  currently  conducted  and  intended  to  be
                         conducted.  The Seller is in compliance  with all terms
                         and
                                     - 19 -

<PAGE>



                         conditions of the Environmental Permits, and is also in
                         compliance  with all other  limitations,  restrictions,
                         conditions,  standards,   prohibitions,   requirements,
                         obligations,  schedules,  and  timetables  contained in
                         those  laws  or   provisions   or   contained   in  any
                         regulation,   code,  plan,  order,  decree,   judgment,
                         notice, or demand letter issued, entered,  promulgated,
                         or approved thereunder and applicable to the Seller.

  2.25    BROKER'S  OR FINDER'S  FEES

          No agent,  broker,  person,  or firm acting on behalf of Seller is, or
          will be,  entitled to any commission or broker's or finder's fees from
          the Seller or from any  person  controlling,  controlled  by, or under
          common  control  with  the  Seller  in  connection  with  any  of  the
          transactions contemplated herein.

  2.26    DISCLOSURE

          All  Documents  delivered  or to be  delivered  by or on behalf of the
          Seller  in  connection  with  this  Agreement  and  the   transactions
          contemplated  hereby are true,  complete,  and correct in all material
          respects.  Neither  this  Agreement,  nor any of the  other  Documents
          contains any untrue  statement of a material  fact or omits a material
          fact  necessary  to make  the  statements  made by  Seller  herein  or
          therein,  in light of the circumstances in which made, not misleading.
          There is no fact known to the Seller which  materially  and  adversely
          affects the business,  prospects or financial  condition of the Seller
          or its  properties  or  assets,  which  has not been set  forth in the
          Documents.

3.        REPRESENTATIONS AND WARRANTIES OF BUYER

          As an  inducement  to the Seller to enter into this  Agreement  and to
          consummate the transactions  contemplated hereby, the Buyer represents
          and  warrants  to the  Seller,  as of the  date  hereof  and as of the
          Closing Date, as follows:

  3.1     ORGANIZATION

          The Buyer is a corporation duly organized,  validly  existing,  and in
          good standing  under the laws of the  Commonwealth  of Virginia and is
          duly qualified to transact  business as a foreign  corporation in each
          jurisdiction  in which the failure to so qualify would have a material
          adverse impact on the Buyer's ability to purchase the Business and the
          Transferred  Assets  pursuant  to this  Agreement  and to perform  its
          obligations under this Agreement and the other Documents.


                                     - 20 -

<PAGE>



  3.2     CORPORATE POWER AND AUTHORITY

          The Buyer has the corporate  power and authority to execute,  deliver,
          and perform this  Agreement and the other  Documents.  The  execution,
          delivery, and performance of the Documents contemplated hereby and the
          consummation of the transactions  contemplated hereby and thereby have
          been duly  authorized  and  approved by all  necessary  corporate  and
          shareholder  action of the Buyer.  The  Documents  to be executed  and
          delivered by the Buyer have been duly  executed and  delivered by, and
          constitute  the legal,  valid,  and binding  obligation  of, the Buyer
          enforceable against the Buyer in accordance with their terms.

  3.3     VALIDITY, ETC.

          Neither the execution and delivery by the Buyer of this  Agreement and
          the other Documents, the consummation by the Buyer of the transactions
          contemplated  hereby or thereby,  nor the  performance by the Buyer of
          this Agreement and such other  agreements in compliance with the terms
          and conditions hereof and thereof will:

             3.3.1       violate,  conflict with, or result in any breach of any
                         trust  agreement,  articles  of  incorporation,  bylaw,
                         judgment,   decree,   order,   statute,  or  regulation
                         applicable to the Buyer;

             3.3.2       violate,  conflict  with,  or  result in a breach of or
                         default  (or give  rise to any  right  of  termination,
                         cancellation,  or acceleration) under any law, rule, or
                         regulation or any judgment, decree, order, governmental
                         permit,   license,  or  order  or  any  of  the  terms,
                         conditions,  or provisions of any mortgage,  indenture,
                         note, license,  agreement, or other instrument to which
                         the Buyer is a party; or

             3.3.3       violate any order, writ, injunction,  decree,  statute,
                         rule, or regulation applicable to the Buyer.

  3.4     BROKER'S OR FINDER'S FEES

          No agent, broker, person, or firm acting on behalf of the Buyer is, or
          will be,  entitled to any commission or broker's or finder's fees from
          the Buyer,  or from any person  controlling,  controlled  by, or under
          common  control  with  the  Buyer,  in  connection  with  any  of  the
          transactions contemplated herein.

  3.5     DISCLOSURE

          All  Documents  delivered  or to be  delivered  by or on behalf of the
          Buyer  in  connection   with  this  Agreement  and  the   transactions
          contemplated hereby are true,

                                     - 21 -

<PAGE>



          complete,   and  correct  in  all  material  respects.   Neither  this
          Agreement,  nor  any of  the  other  Documents,  contains  any  untrue
          statement  of a material  fact or omits a material  fact  necessary to
          make the statements  made by the Buyer herein or therein,  in light of
          the  circumstances  in which made,  not  misleading.  There is no fact
          known to the Buyer  which may have a  material  adverse  effect on the
          Buyer's ability to pay its obligations under this Agreement, which has
          not been set forth in the Documents.

4.       COVENANTS AND AGREEMENTS

         4.1      COOPERATION

                  Each of the  parties  hereto  shall use their best  efforts in
                  good  faith  to  perform  and  fulfill  all   conditions   and
                  obligations  to be  fulfilled  or performed by it hereunder to
                  the end  that the  transactions  contemplated  hereby  will be
                  fully and  timely  consummated.  With  respect  to each of the
                  Contracts  listed on SCHEDULE  1.2 which have been  novated in
                  the  Buyer's  name in  accordance  with  this  Agreement,  the
                  parties further agree to cooperate with respect to any DCAA or
                  other governmental audit, in the preparation and collection of
                  final  billings  and  in  the  preparation  of  incurred  cost
                  submissions.  The Buyer further  agrees to make  available for
                  inspection  by the Seller upon  reasonable  request and during
                  normal business hours,  the books and records  relating to the
                  Business  which are  delivered to the Seller  pursuant to this
                  Agreement  and,  at  the  Seller's  expense,  make  reasonable
                  efforts  to make  former  employees  of the  Seller  currently
                  employed  by the  Buyer  at the time of the  Seller's  request
                  available  to the  Seller  with  respect  to any DCAA or other
                  governmental audits of the Seller.

         4.2      BEST EFFORTS

                  The  Seller and the Buyer  shall each use its best  efforts to
                  procure upon reasonable  terms and conditions all consents and
                  approvals,  completion of all filings, all registrations,  and
                  certificates,  and  satisfaction  of  all  other  requirements
                  prescribed by law which are necessary for the  consummation of
                  the  transactions  contemplated  by  this  Agreement  and  the
                  Buyer's ownership and operation of the Seller's Business after
                  the Closing Date.  Prior to the Closing Date,  the Seller will
                  use its best  efforts to preserve its  relationships  with its
                  employees, customers, and others having business relationships
                  with the Seller.

         4.3      TAX RETURNS

                  The Seller shall cause to be prepared and timely filed, at its
                  sole expense,  all of its required tax returns for all periods
                  ending on or prior to the Effective  Date. The Seller shall be
                  responsible for the payment of, and will indemnify, defend and
                  hold the Buyer  harmless  against  all  taxes due or  assessed
                  which relate to the operations


                                     - 22 -

<PAGE>



                  of the  Business  for  all periods  ending on or prior to the
                  Effective Date.

         4.4      INVESTIGATIONS

                  Prior to the Closing Date, the Seller shall give the Buyer and
                  its employees,  accountants,  attorneys,  and other authorized
                  representatives full access during all reasonable times to all
                  the  premises,  properties,  books,  and records of the Seller
                  relating in any way to the Business or the Transferred Assets,
                  and furnish the Buyer with such financial and operating  data,
                  analyses,   and   other   information   reasonably   requested
                  respecting  the  Business  and the  Transferred  Assets as the
                  Buyer shall from time to time request. Any investigation shall
                  be conducted in a manner which does not unreasonably interfere
                  with business operations.

         4.5      CONDUCT OF BUSINESS IN THE ORDINARY COURSE

                  From  the  Effective  Date  until  Closing,   the  Seller  has
                  conducted  and shall conduct the Business only in the ordinary
                  course. By way of amplification and not limitation,  except as
                  otherwise  provided herein,  the Seller shall not, without the
                  prior written consent of the Buyer, do any of the following to
                  the extent any of the following  have an adverse effect on the
                  Business or the Transferred Assets:

                  4.5.1    borrow  or agree to  borrow  any  material  amount of
                           funds or incur any  liability  or  obligation  of any
                           nature (whether  accrued,  absolute,  contingent,  or
                           otherwise),  or guarantee  or agree to guarantee  any
                           obligations of others;

                  4.5.2    cancel  any  indebtedness  owing to it or any  claims
                           that it might possess,  waive any material  rights of
                           substantial   value,   or  sell,   lease,   encumber,
                           transfer,  or otherwise dispose of, or agree to sell,
                           lease,  encumber,  or otherwise dispose of its assets
                           or permit  any of its assets to be  subjected  to any
                           mortgage,    pledge,    lien,    security   interest,
                           encumbrance, restriction, or charge of any kind;

                  4.5.3    make any  material capital  expenditure or commitment
                           therefor;


                  4.5.4    increase its indebtedness for borrowed money or make
                           any loan to any Person;

                  4.5.5    write  off as  uncollectible  any  notes or  accounts
                           receivable,  except write-offs in the ordinary course
                           of business charged to applicable reserves;

                  4.5.6    make any material change in any method of accounting
                           or auditing practice;



                                     - 23 -

<PAGE>



                  4.5.7    otherwise conduct its business or enter into any
                           transaction, except in the usual and ordinary manner;
                           or

                  4.5.8    agree, whether or not in writing, to do any of the
                           foregoing.

         4.6      PRESERVATION OF BUSINESS

                  Prior to the  Closing  Date,  the  Seller  shall  use its best
                  efforts to preserve the  possession  and control of all of the
                  Transferred Assets and the Business,  to preserve the goodwill
                  of  its  customers  and  others  with  whom  it  has  business
                  relations, and to do nothing to impair the ability to keep and
                  preserve  its  Business  as it  exists  on the  date  of  this
                  Agreement.

         4.7      NOTIFICATION OF MATERIAL CHANGES AND LITIGATION

                  During  the  period  from  the date of this  Agreement  to the
                  Closing  Date,  the Seller shall provide the Buyer with prompt
                  written  notice,  accompanied  by a detailed  description  and
                  analysis to the extent the Transferred  Assets or the Business
                  are adversely effected:

                  4.7.1    of any material adverse,  or to the best knowledge of
                           the Seller,  potentially  material  adverse change in
                           the condition, earnings, or business of the Seller;

                  4.7.2    of any event or condition of any  character  (whether
                           actual  or,  to the  best  knowledge  of the  Seller,
                           threatened)  pertaining to the  financial  condition,
                           business, or assets of the Seller that has materially
                           and   adversely   affected,   or  has  a  substantial
                           possibility  of materially  and adversely  affecting,
                           any of such financial condition, business, or assets,
                           or  causing  any of such  business  to be  carried on
                           materially  less profitably than prior to the date of
                           this Agreement; and

                  4.7.3    of all claims, regulatory proceedings, and litigation
                           (whether  actual  or,  to the best  knowledge  of the
                           Seller,  threatened  and  whether  or  not  material)
                           against or  possibly  involving  the Seller or (where
                           such   actual  or   threatened   claims,   regulatory
                           proceedings  or litigation  arise in connection  with
                           actions  taken or alleged to be taken by any officer,
                           employer,  or director of the Seller) in any capacity
                           as an officer, employee, or director of the Seller.

                  Such adverse or potentially  adverse  material changes or such
                  claims,  proceedings,  or litigation  shall  include,  without
                  limitation, any adverse or potentially adverse material change
                  in or any  litigation  arising in connection  with any item or
                  matter  reported  on  any  schedule,   exhibit,   or  document
                  delivered by the Seller to the Buyer in  connection  with this
                  Agreement.


                                     - 24 -

<PAGE>




         4.8      PAYMENT OF LIABILITIES

                  Except for the Assumed  Liabilities,  the Seller shall pay and
                  satisfy in full all of its other  obligations  and liabilities
                  relating to the  Business or the  Transferred  Assets,  of any
                  nature  whatsoever,  which accrue prior or  subsequent  to the
                  Effective Date.

         4.9      EMPLOYEES AND CONSULTANTS

                  The Buyer and the Seller  have  determined  in good faith that
                  the closing of the transactions contemplated by this Agreement
                  will not result in an "employment  loss" within the meaning of
                  the Workers  Adjustment  Retraining and  Notification  act, 29
                  U.S.C.  ss. 2101 ET SEQ (the "Warn Act").  The Seller has made
                  all of its employees and consultants  available to be hired by
                  the  Buyer.   Notwithstanding  the  foregoing  and  except  as
                  otherwise  set forth in this  Agreement,  the  Buyer  shall be
                  under  no   obligation   to  hire  any  such   employees   and
                  consultants.   The  Buyer  and  the  Seller   understand   and
                  acknowledge  that each is an employer subject to the Warn Act.
                  The Seller shall be  responsible  for any Warn Act  violations
                  based on or arising from acts,  events,  or omissions prior to
                  the Closing,  and the Buyer shall be responsible  for any Warn
                  Act  violations  based on or  arising  from acts,  events,  or
                  omissions after the Closing. At the Closing,  the Seller shall
                  provide  to the  Buyer  a  list  of all  employees  or  former
                  employees  terminated by the Seller during the ninety (90) day
                  period  prior to the Closing.  Nothing  herein shall be deemed
                  either  to  affect  or to  limit  in any  way  the  management
                  prerogatives  of the Buyer with  respect to  employees,  or to
                  create  or  to  grant  to  such   employees  any  third  party
                  beneficiary  rights  or claims or causes of action of any kind
                  or nature.

         4.10     BILLED ACCOUNTS RECEIVABLE

                  The  Seller  shall  assign  to  the  Buyer,  pursuant  to  the
                  Assignment  and  Assumption  Agreement  to be  executed on the
                  Closing  Date in  substantially  the form  attached  hereto as
                  EXHIBIT B, all rights to collect all amounts due it on account
                  of the  Business and the  Transferred  Assets,  which  accrued
                  prior to the Effective Time,  except for Excluded Assets,  and
                  except  for the  work  properly  performed  by the  Seller  on
                  contracts to be novated  during the period  commencing  at the
                  Effective  Time  through  the date(s) of  novation.  The Buyer
                  shall  have the right to retain  all such  amounts  collected.
                  Upon the expiration of the sixty (60) day period following the
                  Closing Date,  the Buyer shall transfer back to the Seller the
                  right to collect  all of the  foregoing  amounts  that  remain
                  uncollected  as of such date and the  Purchase  Price shall be
                  reduced,  dollar for dollar, by the amount so transferred back
                  to the Seller,  such  reduction to be reflected in a reduction
                  in  the  principal  amount  of  the  Promissory  Note  or by a
                  certified  check  delivered  by the Seller to the Buyer at the
                  time of such transfer.


                                     - 25 -

<PAGE>



5.       CONDITIONS TO THE BUYER'S OBLIGATIONS

         The obligation of the Buyer to make  deliveries to the Seller  pursuant
         to Sections 1.2 and 1.3 hereof and to consummate the other transactions
         contemplated  hereby is subject to the  satisfaction,  on or before the
         Closing Date, of the following  conditions  each of which may be waived
         by the Buyer in its sole discretion:

         5.1      CONSENTS

                  Except  as  set  forth  on   SCHEDULE   5.1,   all   requisite
                  governmental   approvals   and   consents  of  third   parties
                  identified  on such  schedule or otherwise  identified  by the
                  Seller as required  to be  received  to prevent  any  material
                  license,  permit,  or agreement  relating to the Business from
                  terminating prior to its scheduled termination, as a result of
                  the  consummation  of the  transactions  contemplated  hereby,
                  shall have been obtained and all permits related to any of the
                  foregoing  shall  have been  transferred  or  reissued  to the
                  Buyer.

         5.2      [RESERVED]

         5.3      NOVATION OF CONTRACTS

                  The Seller shall have  demonstrated to the Buyer's  reasonable
                  satisfaction  that it has diligently  pursued  novation of the
                  contracts  listed in SCHEDULE 5.3, such pursuit to include the
                  filing of all  documentation,  submission of all  information,
                  and payment of any and all fees  required  by the  contracting
                  agency in connection with such novation.

         5.4      REPRESENTATIONS AND WARRANTIES

                  The  representations and warranties of the Seller set forth in
                  Article 2 of this  Agreement  shall be true and correct in all
                  material  respects,  without any exceptions  thereto except as
                  otherwise  stated therein which would materially and adversely
                  affect the Business and the Transferred Assets.

         5.5      [reserved].

         5.6      OPINION OF COUNSEL TO THE SELLER

                  The  Buyer  shall  have  received  from  Messrs.  De  Martino,
                  Finkelstein, Rosen & Virga, counsel to the Seller, an opinion,
                  dated as of the Closing Date, in form and substance reasonably
                  satisfactory to the Buyer,  and to the following effect to the
                  best knowledge of counsel.



                                     - 26 -

<PAGE>



                  5.6.1    The Seller is a corporation  duly organized,  validly
                           existing and in good  standing  under the laws of the
                           Commonwealth  of  Virginia  and is in  good  standing
                           under the laws of the  Commonwealth of Virginia,  and
                           the States of Florida,  New Mexico, and Alabama.  The
                           nature of the Business or the Transferred Assets does
                           not require the Seller to be licensed or qualified in
                           any other  jurisdiction  in which the  failure  to so
                           qualify would have a material  adverse  effect on the
                           Business or the Transferred Assets;

                  5.6.2    The Seller has the corporate  power and authority to
                           own and  hold its  properties and  to  carry  on its
                           business  as  now  conducted.  The  Seller  has  the
                           corporate power  and authority  to execute, deliver,
                           and perform the Agreement and the  other  Documents.
                           The  execution,  delivery,  and performance  of  the
                           Agreement   and   the   other  Documents   and   the
                           consummation of the transactions contemplated hereby
                           and thereby have been duly authorized and approved by
                           all necessary corporate action  of the  Seller.  The
                           Agreement and  each  of  the  other  Documents to be
                           executed and delivered by the Seller have  been duly
                           executed and delivered by, and constitute the legal,
                           valid,  and   binding   obligation  of  the  Seller,
                           enforceable against  the Seller in  accordance  with
                           their terms;
                  5.6.3    [RESERVED]

                  5.6.4    With respect to the  Business or  Transferred Assets,
                           there is no:

                           5.6.4.1      action,  suit,  claim,  proceeding,   or
                                        investigation  pending  or,  to the best
                                        knowledge of Counsel, threatened against
                                        or affecting the Seller  (whether or not
                                        the  Seller  is a party  or  prospective
                                        party thereto),  at law or in equity, or
                                        before   or  by  any   Federal,   state,
                                        municipal,    or   other    governmental
                                        department,  commission,  board, bureau,
                                        agency, or instrumentality,  domestic or
                                        foreign;

                           5.6.4.2      arbitration proceeding pending relating
                                        to the Seller;

                           5.6.4.3      governmental    inquiry    pending   or
                                        threatened  against   or  involvin  the
                                        Seller,  and, to  the best knowledge of
                                        counsel,  there is no basis  for any of
                                        the  foregoing.   The  Seller  has  not
                                        received any opinion or  memorandum  or
                                        legal advice from DeMartino,Finkelstein,
                                        Rosen & Virga, or to  the  best  of its
                                        knowledge from any other legal  counsel
                                        to the effect that it is exposed, from a
                                        legal standpoint,  to any  liability or
                                        legal disadvantage which may be material
                                        to  the  business, prospects,  financial
                                        condition,   operations,  property,  or
                                        affairs of the Business.  There  are  no
                                        outstanding  orders,  writs,  judgments,
                                        injunctions, or decrees

                                     - 27 -

<PAGE>



                                        served  upon the  Seller  by any  court,
                                        governmental   agency,   or  arbitration
                                        tribunal  against  the  Seller.  To  the
                                        knowledge of counsel, there are no facts
                                        or  circumstances  which  may  result in
                                        institution of any action,  suit,  claim
                                        or legal,  administrative or arbitration
                                        proceeding  or  investigation   against,
                                        involving, or affecting the transactions
                                        contemplated hereby; or

                           5.6.4.4      other Claims that would materially or
                                        adversely  affect  the Business  or  the
                                        Transferred Assets.

                  5.6.5    The execution and delivery of this  Agreement and the
                           other Documents, the consummation of the transactions
                           contemplated hereby and thereby,  and the performance
                           of  the  Agreement  and  such  other   agreements  in
                           compliance  with the terms and conditions  hereof and
                           thereof by the Seller will not:

                           5.6.5.1      violate,  conflict with or result in any
                                        breach of any trust agreement,  articles
                                        of   incorporation,   bylaw,   judgment,
                                        decree,  order,  statute  or  regulation
                                        applicable to the Seller;

                           5.6.5.2      violate, conflict  with or result  in a
                                        breach, default or termination  or give
                                        rise   to   any   right  of termination,
                                        cancellation  or  acceleration  of  the
                                        maturity of  any payment date of any of
                                        the  obligations   of  the   Seller  or
                                        increase   or   otherwise   affect  the
                                        obligations of the Seller under any law,
                                        rule,   regulation   or   any  judgment,
                                        decree,   order,  governmental  permit,
                                        license  or  order or  any of the terms,
                                        conditions   or   provisions   of   any
                                        mortgage,  indenture,   note,   license,
                                        agreement   or   other   instrument  or
                                        obligation related to the  Seller or to
                                        the Seller's ability  to consummate the
                                        transactions   contemplated  hereby  or
                                        thereby, except  for such  defaults (or
                                        rights  of termination, cancellation  or
                                        acceleration)   a  to   which  requisite
                                        waivers or consents have been  obtained
                                        in writing and provided to the Buyer; or

                           5.6.5.3      result in the creation of any Claim upon
                           the Transferred Assets; and

                  5.6.6    The  Bill of  Sale  conveys  all  right,  title,  and
                           interest in and to the Transferred Assets.

         5.7      CLOSING DOCUMENTS

                  The  Seller  shall  have  delivered  all of  the  resolutions,
                  certificates,  documents,  and  instruments  required  by this
                  Agreement.


                                     - 28 -

<PAGE>




         5.8      APPROVAL OF THE BUYER AND ITS COUNSEL

                  All actions, proceedings, consents, instruments, and documents
                  required to be delivered by, or at the behest or direction of,
                  the Seller hereunder or incident to its performance hereunder,
                  and all other related matters, shall, except to the extent the
                  form of same is  specified  in the  Documents,  be  reasonably
                  satisfactory  as to form and  substance  to the  Buyer and its
                  counsel.

6.       CONDITIONS TO THE SELLER'S OBLIGATIONS

         The obligation of the Seller to transfer the Transferred  Assets to the
         Buyer and to consummate the other transactions  contemplated  hereby is
         subject to the  satisfaction,  on or before the  Closing  Date,  of the
         following conditions,  each of which may be waived by the Seller in its
         sole discretion:

         6.1      OPINION OF COUNSEL TO THE BUYER

                  The Seller shall have received from Arent Fox Kintner  Plotkin
                  & Kahn,  counsel to the  Buyer,  an  opinion,  dated as of the
                  Closing Date, in form and substance reasonably satisfactory to
                  the Seller,  to the effect that this  Agreement  has been duly
                  authorized, executed, and delivered by the Buyer.

         6.2      CLOSING DOCUMENTS

                  The  Buyer  shall  have  delivered  all  of  the  resolutions,
                  certificates,  documents,  and  instruments  required  by this
                  Agreement.

         6.3      APPROVAL OF THE SELLER AND ITS COUNSEL

                  All actions, proceedings, consents, instruments, and documents
                  required to be delivered by, or at the behest or direction of,
                  the Buyer hereunder or incident to its performance  hereunder,
                  and  all   other   related   matters,   shall  be   reasonably
                  satisfactory  as to form and  substance  to the Seller and its
                  counsel.

7.       THE CLOSING AND CERTAIN CLOSING DELIVERIES

         7.1      TIME AND PLACE OF CLOSING

                  Upon the terms and  subject to the  satisfaction  or waiver of
                  the conditions contained in this Agreement, the closing of the
                  transactions  contemplated  by this Agreement (the  "Closing")
                  shall take place at the offices of Arent Fox Kintner Plotkin &
                  Kahn, 1050 Connecticut Avenue, N.W., Washington, D.C.
                  20036-5339, on 16 October,


                                     - 29 -

<PAGE>



                 1997, 10 a.m. or on such other date and time as may be mutually
                 agreed  upon by the  parties  prior to 16  October,  1997  (the
                 "Closing  Date").   The   transactions   contemplated  by  this
                 Agreement  shall be effective as of 12:01 a.m. (the  "Effective
                 Time") on 1  October,  1997 (the  "Effective  Date")  except as
                 otherwise specifically set forth in this Agreement.

         7.2     DELIVERIES BY THE SELLER

                  At the  Closing,  the  Seller  will  deliver  or  cause  to be
                  delivered to the Buyer the following:

                  7.2.1    All required  consents of third  parties to the sale,
                           conveyance, transfer, assignment, and delivery of the
                           Transferred  Assets  and the  Business  of the Seller
                           hereunder;

                  7.2.2    A certificate  of the Secretary  (or, if  authorized,
                           the Assistant  Secretary) of the Seller certifying as
                           of the Closing Date the following:

                           7.2.2.1      a true, correct, and complete copy of
                      the Articles of Incorporation of the
                     Seller and all amendments thereto as in
                           effect on the Closing Date;

                           7.2.2.2      a true, correct,  and complete  copy  of
                                        the  By-laws  of  the   Seller  and  all
                                        amendments  thereto as  in effect on the
                                        Closing Date;

                           7.2.2.3      a true,  correct,  and complete  copy of
                                        the resolutions  approved and adopted by
                                        the   Seller's    Board   of   Directors
                                        authorizing and approving the execution,
                                        performance   and   delivery   of   this
                                        Agreement    and    the     transactions
                                        contemplated by this Agreement; and

                           7.2.2.4      the  incumbency  of the  duly authorized
                                        officers of the Seller.

                  7.2.3    A  Certificate  of Good Standing from each of (i) the
                           Commonwealth of Virginia,  (ii) the State of Florida,
                           (iii) the State of New Mexico,  and (iv) the State of
                           Alabama.

                  7.2.4    The  affidavit  of the  Seller  certifying  as to its
                           non-foreign   status  in   accordance   with  Section
                           1445(b)(2) of the Internal Revenue Code substantially
                            in the form of EXHIBIT H.

                  7.2.5    The Bill of Sale required by Section 1.1.5;



                                     - 30 -

<PAGE>



                  7.2.6    The Assignment and  Assumption Agreement  required by
                           Section 1.1.5;

                  7.2.7    The   Lease   Assignment   and   Assumption Agreement
                           required by Section 1.1.5;

                  7.2.8    Evidence   of   termination  of   existing employment
                           arrangements if any;

                  7.2.9    The  opinion  of  the  Seller's  counsel  required by
                             Section 5.6 above; and

                  7.2.10   The Subordination Agreement required by Section 1.6;

                  7.2.11   The Escrow Agreement required by Section 1.2.7;

                  7.2.12   A  Certification  of Delivery  listing and  attaching
                           true,  correct and complete  copies of certain of the
                           documents referenced in this Agreement (including all
                           Exhibits  and  Schedules  hereto)  but  not  attached
                           hereto  (all of  such  documents  being  incorporated
                           herein by reference);

                  7.2.13   All  other  documents,   instruments,   and  writings
                           required to be delivered by the Seller at or prior to
                           the  Closing  Date  pursuant  to  this  Agreement  or
                           otherwise required in connection herewith.

         7.3      DELIVERIES BY THE BUYER

                  At the Closing, the Buyer will deliver the following to or for
                  the account of the Seller or certain of its employees,  as the
                  case may be:

                  7.3.1    The payments required by Sections 1.2.5 above;

                  7.3.2    The Promissory Note of the Buyer required by Section
                           1.2.6 above;

                  7.3.3    The Assignment and Assumption Agreement  required by
                           Section 1.3;

                  7.3.4    The   Lease  Assignment  and   Assumption   Agreement
                            required by Section 1.3;

                  7.3.5    [reserved];

                  7.3.6    The  Opinion  of  the  Buyer's  counsel  required  by
                           Section 6.1 above;

                  7.3.7    A certificate of an officer of the Buyer  certifying,
                           as of the Closing Date, a true, correct, and complete
                           copy of the  resolutions  approved and adopted by the
                           Board  of  Directors  of the  Buyer  authorizing  the
                           transactions contemplated herein; and


                                     - 31 -

<PAGE>




                  7.3.8    The Security Agreement required by Section 1.5;

                  7.3.9    The Escrow Agreement required by Section 1.2.7;

                  7.3.10   All  other  documents,   instruments,   and  writings
                           required to be  delivered by the Buyer at or prior to
                           the  Closing  Date  pursuant  to  this  Agreement  or
                           otherwise required in connection herewith.

8.       INDEMNIFICATION

         8.1      SURVIVAL

                  All  representations  and warranties in this Agreement and the
                  other Documents shall survive the Closing of the  transactions
                  contemplated  by this Agreement and any  investigation  at any
                  time made by or on behalf of any party for a period of two and
                  one  half (2  1/2)  years  (i.  e.  912  days)  and  all  such
                  representations  and warranties shall expire 2 1/2 years after
                  the Closing Date, except that:

                  8.1.1    claims,  if any, asserted in writing prior to the end
                           of such 2 1/2 year period  identified  as a claim for
                           indemnification  pursuant  to  this  Section  8 shall
                           survive until finally resolved and satisfied in full;
                           and

                  8.1.2    tax or environmental  claims arising from a breach of
                           Sections 2.24 and 2.26,  respectively,  shall survive
                           for the full  period  of the  applicable  statute  of
                           limitations, and until finally resolved and satisfied
                           in full if asserted on or prior to the  expiration of
                           any such period. The  representations  and warranties
                           shall not be affected or otherwise  diminished by any
                           investigation  at any  time  by or on  behalf  of the
                           party  for whose  benefit  such  representations  and
                           warranties were made.

         8.2      INDEMNIFICATION BY SELLER

                  Subject  to the terms  herein,  the  Seller  shall  indemnify,
                  defend,  and  hold  the  Buyer  and the  respective  officers,
                  directors,  and employees of the Buyer,  and their  successors
                  and  assigns  (the  "Seller's   Indemnitees")  harmless  from,
                  against and with respect to any claim, liability,  obligation,
                  loss, damage,  assessment,  judgment, cost, and expense of any
                  kind or character  (the  "Damages"),  arising out of or in any
                  manner incident, relating or attributable to:

                  8.2.1    Any  material  inaccuracy  in  any  representation or
                           breach  of any  warranty of  the  Seller contained in
                           this Agreement;



                                     - 32 -

<PAGE>



                  8.2.2    Any  material  failure  by the  Seller to  perform or
                           observe,  or to have performed or observed,  in full,
                           any covenant, agreement, or condition to be performed
                           or observed by it under this Agreement;

                  8.2.3    Reliance  by the Buyer on any books or records of the
                           Seller or written information  furnished to the Buyer
                           pursuant  to this  Agreement  by or on  behalf of the
                           Seller in the event  that such  books and  records or
                           written information are false or inaccurate excluding
                           things that are reasonably estimated; or

                  8.2.4    Liabilities or obligations of, or claims against, the
                           Buyer  (whether  absolute,   accrued,  contingent  or
                           otherwise)  relating  to,  or  arising  out  of,  the
                           operation of the  Business  prior to the Closing Date
                           or facts and circumstances  relating  specifically to
                           the  Business,  the  Leased  Parcels,  or the  Seller
                           existing at or prior to the Closing Date,  whether or
                           not such  liabilities,  obligations  or  claims  were
                           known  on  such  date,  excluding  only  the  Assumed
                           Liabilities.

         8.3      NOTICE TO SELLER

                  If any of the matters as to which the Seller's Indemnitees are
                  entitled to receive  indemnification  under Section 8.2 should
                  entail  litigation  with or claims  asserted by parties  other
                  than the  Seller,  the  Seller  shall be given  prompt  notice
                  thereof and shall have the right,  at his expense,  to control
                  such claim or  litigation  upon prompt  notice to the Buyer of
                  his election to do so. To the extent  requested by the Seller,
                  the Buyer, at its expense, shall cooperate with and assist the
                  Seller, in connection with such claim or litigation. The Buyer
                  shall have the right to appoint single counsel to consult with
                  and remain advised by the Seller in connection with such claim
                  or  litigation.  The  Seller  shall have  final  authority  to
                  determine  all  matters  in  connection  with  such  claim  or
                  litigation;  provided,  however,  that the  Seller  shall  not
                  settle any third party claim without the consent of the Buyer,
                  which shall not be unreasonably denied or delayed.

         8.4      INDEMNIFICATION BY BUYER

                  Subject  to the  terms  herein,  the  Buyer  shall  indemnify,
                  defend,  and  hold the  Seller  and the  respective  officers,
                  directors,  and employees of the Seller and its successors and
                  assigns (the "Buyer's  Indemnitees")  harmless from,  against,
                  and with respect to any claim,  liability,  obligation,  loss,
                  damage, assessment, judgment, cost, and expense of any kind or
                  character  (the  "Damages"),  arising  out of or in any manner
                  incident, relating, or attributable to:

                  8.4.1    Any  inaccuracy in  any representation  or breach of
                           warranty of the Buyer contained in this Agreement;


                                     - 33 -

<PAGE>




                  8.4.2    Any failure by the Buyer to perform or observe, or to
                           have  performed or observed,  in full,  any covenant,
                           agreement or condition to be performed or observed by
                           it under any of the Documents;

                  8.4.3    Reliance by the Seller on any books or records of the
                           Buyer  or  reliance  by the  Seller  on  any  written
                           information  furnished to the Seller pursuant to this
                           Agreement  by or on  behalf of the Buyer in the event
                           that such books and  records  or written  information
                           are false or inaccurate;

                  8.4.4    The  failure  of  the  Buyer  to  pay or  perform the
              Assumed Liabilities, Contracts and Leases subsequent
                             to the Closing Date; or

                  8.4.5    Liabilities or obligations of, or claims against, the
                           Seller  (whether  absolute,  accrued,  contingent  or
                           otherwise)  relating  to,  or  arising  out  of,  the
                           operation of the Business  subsequent  to the Closing
                           Date.

         8.5      NOTICE TO THE BUYER

                  If any of the matters as to which the Buyer's  Indemnitees are
                  entitled to receive  indemnification  under Section 8.4 should
                  entail  litigation  with or claims  asserted by parties  other
                  than the Buyer, the Buyer shall be given prompt notice thereof
                  and shall  have the right,  at its  expense,  to control  such
                  claim or  litigation  upon prompt  notice to the Seller of its
                  election to do so. To the extent  requested by the Buyer,  the
                  Seller,  at his expense,  shall  cooperate with and assist the
                  Buyer, in connection with such claim or litigation. The Seller
                  shall have the right to appoint single counsel to consult with
                  and remain advised by the Buyer in connection  with such claim
                  or  litigation.  The  Buyer  shall  have  final  authority  to
                  determine  all  matters  in  connection  with  such  claim  or
                  litigation; provided, however, that the Buyer shall not settle
                  any third party claim without the consent of the Seller, which
                  shall not be unreasonably denied or delayed.

         8.6      SURVIVAL OF INDEMNIFICATION

                  The  obligations  to indemnify and hold  harmless  pursuant to
                  this  Section 8 shall  survive the Closing of the  purchase of
                  the Business  contemplated hereby for a period of 2 1/2 years,
                  notwithstanding  any  investigation  at any time made by or on
                  behalf of any party, except that:

                  8.6.1    claims,  if any, asserted in writing prior to the end
                           of such 2 1/2 year period  identified  as a claim for
                           indemnification  pursuant  to  this  Section  8 shall
                           survive until finally resolved and satisfied in full;
                           and



                                     - 34 -

<PAGE>



                  8.6.2    tax or environmental  claims arising from a breach of
                           Sections 2.22 and 2.24,  respectively,  shall survive
                           for the full  period  of the  applicable  statute  of
                           limitations, and until finally resolved and satisfied
                           in full if asserted on or prior to the  expiration of
                           any such period.

         8.7      OFFSET

                  The Seller  acknowledges  and agrees  that the Buyer  shall be
                  entitled  to offset any  indemnity  claim  under  Section  8.2
                  against any payment due to the Seller under Section 1.2 hereof
                  at the  Buyer's  sole  option.  In the  event  that the  Buyer
                  intends  to  assert a right to  offset  under  this  Section 8
                  Agreement shall,  prior to offsetting any amount otherwise due
                  (or as soon  thereafter  as is reasonably  practicable),  give
                  written  notice to the other  party of the basis upon which it
                  asserts  such right and the manner in which the amount  offset
                  was  calculated.  The  parties  agree that the  failure of the
                  party  giving  such notice to state any claim or amount in any
                  such  notice  shall not  constitute  a waiver of such claim or
                  amount  or in  any  manner  or to  any  extent  compromise  or
                  prejudice any claim not stated therein.

9.       MISCELLANEOUS

         9.1      KNOWLEDGE OF SELLER

                  Where  any   representation  or  warranty  contained  in  this
                  Agreement  is  expressly  qualified  by  reference to the best
                  knowledge of the Seller,  the Seller confirms that it has made
                  due  and  diligent  inquiry  of  its  President/CEO  as to the
                  matters  that  are  the  subject  of such  representation  and
                  warranty.

         9.2      "PERSON" DEFINED

                  "Person" shall mean and include an individual,  a partnership,
                  a joint venture,  a corporation,  a trust,  an  unincorporated
                  organization  and a government  or other  department or agency
                  thereof.

         9.3      NOTICES

                  All  notices,  requests,  consents  and  other  communications
                  hereunder  shall  be in  writing,  shall be  addressed  to the
                  receiving  party's  address  set forth  below or to such other
                  address  as a party may  designate  by notice  hereunder,  and
                  shall  be  either   delivered  by  hand,  sent  by  recognized
                  overnight courier, made by telecopy or facsimile transmission,
                  or  sent by  registered  or  certified  mail,  return  receipt
                  requested, postage prepaid.




                                     - 35 -

<PAGE>



                  If to the Buyer:

                  Star Mountain, Inc.
                  3601 Eisenhower Avenue
                  Alexandria, Virginia 22304-6439
                  Attn: Carl von Sternberg, President
                  Fax No: (703) 960-7009

                  With a copy to:

                  Arent Fox Kintner Plotkin & Kahn
                  1050 Connecticut Avenue, N.W.
                  Washington, DC 20036-5339
                  Attn: David C. Haas, Esq.
                  Fax No: (202) 857-6395

                  If to the Seller:

                  Essex Corporation
                  9150 Guilford Road
                  Columbia, Maryland 21046-1891
                  Attn: Harry Letaw, Jr.
                  Fax No: (301) 953-7880

                  With a copy to:

                  De Martino, Finkelstein, Rosen & Virga 1818 N Street, N.W.
                  Suite 400
                  Washington, DC  20036
                  Attn: Ralph V. De Martino, Esq.
                  Fax No: (202) 659-1290

                  All  notices,  requests,  consents  and  other  communications
                  hereunder  shall be deemed to have been  given if by hand,  at
                  the time of the delivery thereof to the receiving party at the
                  address of such party set forth above:

                  9.3.1    if sent by  overnight  courier,  on the next business
                           day following the day such notice is delivered to the
                           courier service;

                  9.3.2    if made by telecopy or facsimile transmission, at the
                           time that receipt  thereof has been  acknowledged  by
                           electronic confirmation or otherwise; or



                                     - 36 -

<PAGE>



                  9.3.3    if sent by registered or certified mail, on the fifth
                           business day  following the day such mailing is sent.
                           The address of any party herein may be changed at any
                           time by written notice to the parties.

         9.4      ENTIRE AGREEMENT

                  This  Agreement  and the other  Documents  embody  the  entire
                  agreement and  understanding  between the parties  hereto with
                  respect to the subject  matter  hereof and supersede all prior
                  oral or written agreements and understandings  relating to the
                  subject matter hereof, including but not limited to the letter
                  of intent between Buyer and Seller dated 25 June, 1997 (signed
                  by  Seller on 8 July,  1997).  No  statement,  representation,
                  warranty, covenant, or agreement of any kind not expressly set
                  forth  in the  other  Documents  shall  affect,  or be used to
                  interpret,   change,  or  restrict,   the  express  terms  and
                  provisions of this Agreement.

         9.5      MODIFICATIONS AND AMENDMENTS

                  The terms and  provisions of this Agreement may be modified or
                  amended  only by written  agreement  executed  by all  parties
                  hereto.

         9.6      ASSIGNMENT/BINDING EFFECT

                  Neither  this  Agreement,  nor  any  right  hereunder,  may be
                  assigned  by any of  the  parties  hereto  without  the  prior
                  written consent of the other parties; PROVIDED,  however, that
                  Buyer may assign its rights to acquire the Transferred Assets,
                  and its obligations to assume the assumed liabilities,  to any
                  subsidiary  and the  Seller may assign any amount due it under
                  this Agreement or any of the other  Documents.  This Agreement
                  shall be  binding  upon,  and  inure to the  benefit  of,  the
                  parties   hereto   and  their   respective   heirs,   personal
                  representatives, successors, and permitted assigns.

         9.7      PARTIES IN INTEREST

                  Nothing in this Agreement,  express or implied, is intended to
                  confer  upon any other  person any rights or  remedies  of any
                  nature  whatsoever  under  or by  reason  of  this  Agreement.
                  Nothing in this  Agreement  shall be  construed  to create any
                  rights or obligations  except among the parties hereto, and no
                  person  or  entity   shall  be  regarded   as  a   third-party
                  beneficiary of this Agreement.

         9.8      GOVERNING LAW

                  This  Agreement and the rights and  obligations of the parties
                  hereunder  shall be construed in accordance  with and governed
                  by the internal laws of the  Commonwealth of Virginia  without
                  giving effect to the conflict of law principles


                                     - 37 -

<PAGE>



                  thereof.

         9.9      ARBITRATION

                  Any dispute or difference  between the parties  hereto arising
                  out of or relating to this Agreement  shall be finally settled
                  by arbitration in accordance with the Commercial  Rules of the
                  American Arbitration Association by a panel of three qualified
                  arbitrators.  The  Seller and the Buyer  shall each  choose an
                  arbitrator and the third shall be chosen by the two so chosen.
                  If  either  the  Seller  or  the  Buyer  fails  to  choose  an
                  arbitrator  within 30 days  after  notice of  commencement  of
                  arbitration or if the two  arbitrators  fail to choose a third
                  arbitrator  within  30  days  after  their  appointment,   the
                  American  Arbitration  Association  shall, upon the request of
                  any party to the dispute or difference, appoint the arbitrator
                  or arbitrators to constitute or complete the panel as the case
                  may be. Arbitration  proceedings hereunder may be initiated by
                  either the Seller or the Buyer making a written request to the
                  American   Arbitration   Association,    together   with   any
                  appropriate   filing  fee,  at  the  office  of  the  American
                  Arbitration  Association in Washington,  D.C. All  arbitration
                  proceedings  shall be held in  Washington,  D.C.  Any order or
                  determination  of the  arbitral  tribunal  shall be final  and
                  binding upon the parties to the arbitration and may be entered
                  in any court having jurisdiction.

         9.10     SEVERABILITY

                  In  the  event  that  any   arbitral   tribunal  of  competent
                  jurisdiction  shall finally  determine that any provision,  or
                  any portion thereof, contained in this Agreement shall be void
                  or unenforceable in any respect,  then such provision shall be
                  deemed  limited  to the  extent  that such  arbitral  tribunal
                  determines it  enforceable,  and as so limited shall remain in
                  full  force  and  effect.  In the  event  that  such  arbitral
                  tribunal  shall  determine  any  such  provision,  or  portion
                  thereof,  wholly  unenforceable,  the remaining  provisions of
                  this  Agreement  shall  nevertheless  remain in full force and
                  effect.

         9.11     INTERPRETATION

                  The parties hereto acknowledge and agree that: (i) the rule of
                  construction  to the effect that any  ambiguities are resolved
                  against  the  drafting  party  shall  not be  employed  in the
                  interpretation  of this  Agreement,  and  (ii) the  terms  and
                  provisions of this Agreement  shall be construed  fairly as to
                  all  parties  hereto and not in favor of or against any party,
                  regardless  of which party was generally  responsible  for the
                  preparation of this Agreement.



                                     - 38 -

<PAGE>



         9.12     HEADINGS AND CAPTIONS

                  The headings and captions of the various  subdivisions of this
                  Agreement are for  convenience  of reference only and shall in
                  no way modify,  or affect,  or be  considered in construing or
                  interpreting  the meaning or  construction of any of the terms
                  or provisions hereof.

         9.13     RELIANCE

                  The parties  hereto agree that,  notwithstanding  any right of
                  any party to this Agreement to investigate  the affairs of any
                  other party to this Agreement,  the party having such right to
                  investigate  shall  have  the  right  to rely  fully  upon the
                  representations  and  warranties of the other party  expressly
                  contained herein.

         9.14     EXPENSES

                  Each party shall pay its own fees and expenses  (including the
                  fees  of any  attorneys,  accountants,  appraisers  or  others
                  engaged  by such  party)  incurred  in  connection  with  this
                  Agreement and the transactions  contemplated hereby whether or
                  not the transactions contemplated hereby are consummated.

         9.15     GENDER

                  All  pronouns  and any  variation  thereof  shall be deemed to
                  refer to the masculine,  feminine, neuter, singular, or plural
                  as the  identity  of the person or entity or the  context  may
                  require.

         9.16     PUBLICITY

                  Except by the  mutual  agreement  between  the  Seller and the
                  Buyer,  no party  shall issue any press  release or  otherwise
                  make any public statement with respect to the execution of, or
                  the transactions contemplated by, this Agreement except as may
                  be required by law.


         9.17     COUNTERPARTS

                  This  Agreement  may be executed in one or more  counterparts,
                  and by different parties hereto on separate counterparts, each
                  of  which  shall  be  deemed  an  original,  but all of  which
                  together shall constitute one and the same instrument.



                                     - 39 -

<PAGE>



         IN WITNESS  WHEREOF,  the Buyer and the Seller  have each  caused  this
Agreement  to be executed by its duly  authorized  officer all as of the day and
year first above written.



STAR MOUNTAIN, INC.                         ATTEST

\Timothy Schimkus\                          \Irene M. Byrne\
- -----------------------------               -----------------------------
Timothy Schimkus                            Irene M. Byrne
Treasurer                                   Secretary

ESSEX CORPORATION                           ATTEST

\Harry Letaw, Jr.\                          \Kimberly DeChello\
- -----------------------------               -----------------------------
Harry Letaw, Jr.                            Kimberly DeChello
Chief Executive Officer                     Assistant Secretary





                                     - 40 -

<PAGE>


                                    EXHIBIT A



                                  BILL OF SALE



         KNOW ALL MEN BY THESE  PRESENTS,  that  ESSEX  CORPORATION,  a Virginia
corporation (the "Transferor"),  in consideration of the covenants,  agreements,
terms,  and  provisions  contained  in the  Asset  Purchase  Agreement  dated 16
October,  1997 and effective 1 October, 1997 (the "Asset Purchase Agreement") by
and between  Transferor and STAR  MOUNTAIN,  INC., a Virginia  corporation  (the
"Transferee"),  and other  good and  valuable  consideration,  the  receipt  and
adequacy of which are hereby  acknowledged,  does hereby  grant,  sell,  assign,
convey, transfer, and deliver "where is" unto Transferee,  free and clear of all
claims,  charges,  liens,  contracts (except as otherwise  provided in the Asset
Purchase   Agreement),   rights,   options,   security   interests,   mortgages,
encumbrances, and restrictions whatsoever, the Transferred Assets.


         TO HAVE AND TO HOLD  all and  singular  said  Transferred  Assets  unto
Transferee, its successors, and assigns, to its own use and benefit forever.


         This Bill of Sale is subject in all  respects to the terms of the Asset
Purchase Agreement, and all of the representations,  warranties,  covenants, and
agreements contained in the Asset Purchase Agreement, all of which shall survive
the execution and delivery of this Bill of Sale in accordance  with the terms of
the Asset Purchase Agreement.  Transferor  represents,  warrants,  and covenants
with Transferee  that it is the true and lawful owner of the Transferred  Assets
and has a good and perfect right to sell and transfer good and marketable  title
thereto,  free and clear of all Claims.  All capitalized words and terms used in
this Bill of Sale and not  defined  herein  shall have the  respective  meanings
ascribed to them in the Asset Purchase Agreement.


         This Bill of Sale and the rights and  obligations of the Transferee and
Transferor  hereunder  shall be construed in accordance with and governed by the
internal  laws of the  Commonwealth  of Virginia,  without  giving effect to the
conflict of law principles thereof.




                                      - 1 -

<PAGE>



         IN WITNESS  WHEREOF,  the Transferor has caused this Bill of Sale to be
executed by its duly authorized officer, as of the 16th day of October, 1997.


ESSEX CORPORATION                                 ATTEST:



By:  \Harry Letaw, Jr.\                 By:    \Kimberly DeChello\
     -------------------------------           -------------------------------
     Harry Letaw, Jr.                          Kimberly DeChello
     Chief Executive Officer                   Assistant Secretary



                                      - 2 -

<PAGE>

                                    EXHIBIT B


                       ASSIGNMENT AND ASSUMPTION AGREEMENT


         THIS ASSIGNMENT AND ASSUMPTION  AGREEMENT (the "Agreement") is made and
entered into as of the 16th day of October,  1997 by and between STAR  MOUNTAIN,
INC.  (the  "Assignee"),  a Virginia  corporation,  and ESSEX  CORPORATION  (the
"Assignor"), a Virginia corporation.

                             PRELIMINARY STATEMENTS:

         Assignor and Assignee  have  entered into an Asset  Purchase  Agreement
dated 16 October,  1997 herewith (the "Asset Purchase  Agreement"),  pursuant to
which  Assignor  has agreed to transfer to  Assignee,  substantially  all of its
assets used in  connection  with its  "Systems  Effectiveness  Division" as more
particularly  described  in the  Asset  Purchase  Agreement  (collectively,  the
"Business"); and

         In connection with the Business, Assignor is a party to certain written
agreements  and holds  certain  licenses  and  permits  and,  in order to induce
Assignee to enter into the Asset Purchase Agreement,  Assignor desires to assign
to Assignee  all right,  title,  and  interest it has in and to the  agreements,
licenses,  and permits and  Assignee  desires to accept such  assignment  and to
assume and become  responsible  on and after the date hereof for  performing and
observing the terms, conditions, and provisions of the agreements, licenses, and
permits and would not enter into the Asset Purchase  Agreement or consummate the
transactions contemplated thereby but for this Agreement; and

         The provisions in this Agreement will protect the Business and goodwill
of  the  Business  transferred  to  Assignee  pursuant  to  the  Asset  Purchase
Agreement.

         NOW,  THEREFORE,  in  consideration of the premises set forth above and
the mutual  covenants and agreements  contained  herein,  and for other good and
valuable   consideration,   the  receipt  and   adequacy  of  which  are  hereby
acknowledged, the parties agree as follows:

1.       ASSIGNMENT OF CONTRACTS

         Assignor  hereby  sells,  assigns,  and  transfers  to  Assignee,   its
         successors,  and assigns, all right, title, and interest of Assignor in
         the  agreements  and contracts set forth on SCHEDULE 1 attached  hereto
         and incorporated  herein by reference (the  "Contracts").  Specifically
         excluded from this Agreement are all contracts which are not capable of
         being  transferred  or assigned  without the approval or consent of any
         party thereto other than Assignor  which approval or consent has not as
         of this date been obtained,  all such  contracts and  agreements  being
         listed in SCHEDULE 2 hereto.


                                      - 1 -


<PAGE>



2.       ASSIGNMENT OF LICENSES, ETC.

         Assignor  hereby  sells,  assigns,  and  transfers  to  Assignee,   its
         successors,  and assigns, all right, title, and interest of Assignor in
         the  licenses  and permits set forth on SCHEDULE 3 attached  hereto and
         incorporated herein by reference (the "Licenses").

3.       ASSUMPTION

         Assignee  accepts the foregoing  assignments  and on and after the date
         hereof will perform all obligations  required to be performed by and in
         the manner set forth in the Contracts  and Licenses,  all with the same
         force  and  effect  as if  Assignee  were  originally  named as a party
         therein.

4.       NO OTHER ASSUMPTION

         Except for the  obligations  expressly  assumed  pursuant  to Section 3
         above,  Assignee  shall not be  responsible  for, does not assume,  and
         shall not perform any  obligations or liabilities of Assignor,  whether
         known or unknown,  contingent  or  otherwise,  arising from  Assignor's
         conduct in  connection  with the  Contracts  or the  Licenses,  whether
         before or after the date hereof.

5.       MISCELLANEOUS

         5.1      APPLICABLE LAW

                  This  Agreement and the rights and  obligations of the parties
                  hereunder  shall be construed in accordance  with and governed
                  by the internal laws of the Commonwealth of Virginia,  without
                  giving effect to the conflict of law principles thereof.

         5.2      HEADINGS

                  Section and other headings contained in this Agreement are for
                  reference  purposes only and are in no way intended to define,
                  interpret,  describe or otherwise  limit the scope,  extent or
                  intent of this Agreement or any of its provisions.

         5.3      PARTIES IN INTEREST

                  This Agreement  shall be binding upon and inure to the benefit
                  of the  parties  hereto and their  respective  successors  and
                  assigns.


                                      - 2 -


<PAGE>



         5.4      AMENDMENTS

                  This  Agreement  may  not be  changed  orally  but  only by an
                  agreement in writing signed by the parties hereto.

         5.5      THIRD PARTY BENEFICIARIES

                  Each  party  hereto  intends  that  this  Agreement  shall not
                  benefit or create any right or cause of action in or on behalf
                  of any person other than the parties hereto, their successors,
                  and assigns.


                                      (End)


                                      - 3 -


<PAGE>




         IN WITNESS WHEREOF, Assignee and Assignor have caused this Agreement to
be executed as of the date first above written.



STAR MOUNTAIN, INC.                        ATTEST
ASSIGNEE

         \Timothy Schimkus\                         \Irene M. Byrne\
By:      _____________________________     By:      ____________________________
         Timothy Schimkus                           Irene M. Byrne
         Treasurer                                  Secretary

ESSEX CORPORATION                          ATTEST
ASSIGNOR

         \Harry Letaw, Jr.\                         \Kimberly DeChello\
By:      _____________________________     By:      ____________________________
         Harry Letaw, Jr.                           Kimberly DeChello
         Chief Executive Officer                    Assistant Secretary



                                      - 4 -


<PAGE>


                                                GNMENT AND ASSUMPTION AGREEMENT
                                                                16 OCTOBER, 1997


                                   SCHEDULE 1

                               ASSUMED LIABILITIES


1.       CONTRACTS

         1.1      Contract No. DAAD05-93-D-7022,  dated April 1, 1993, issued by
                  the Directorate of Contracting,  USAAPGSA, Ryan Building, APG,
                  Maryland  21005-5001,  to Essex  Corporation,  1430 Springhill
                  Road, Suite 510, McLean, Virginia 22102.

         1.2      Contract No. DAAB07-97-C-6013, dated March 14, 1997, issued by
                  USA CECOM ACQ CTR,  Washington  OPS  Office,  2461  Eisenhower
                  Avenue (AMSEL-AC-WB- B), Alexandria,  Virginia 22331-0700,  to
                  Essex  Corporation,  1430 Springhill  Road, Suite 510, McLean,
                  Virginia 22102.

         1.3      Subcontract  No.116054-24195,  dated February 11, 1997, issued
                  by Fibertek, Inc. ESS, 510 Herndon Parkway,  Herndon, Virginia
                  22070, to Essex Corporation,  Systems Effectiveness  Division,
                  1430  Springhill  Road,  Suite  510,  McLean,  Virginia  22102
                  (attached) -- including Delivery Order DAAB07-96-D-H753.

         1.4      Contract No.  NAS9-97022,  dated  December 2, 1996,  issued by
                  NASA Johnson Space Center, S&LS Acquisition  Management,  2101
                  NASA Road 1, Houston, Texas 77058-3698,  to Essex Corporation,
                  1430 Springhill Road, Suite 510, McLean, Virginia 22102.

         1.5      Contract  No. DE-AC04-93AL91124,  dated  September  15,  1993,
                  issued by  the Department of Energy,  Albuquerque  Operations
                  Office, P.O. Box 5400, Albuquerque, New Mexico 87185-5400, to
                  Essex Corporation,  1430 Springhill  Road, Suite 510, McLean,
                  Virginia 22102.

         1.6      Grant No. 1 R43 AA11608-01  dated September 22, 1997 issued by
                  National   Institutes  of  Health,   6000   Executive   Blvd.,
                  Rockville,  MD 20892-7003 to Essex Corporation,  1040 Woodcock
                  Road, Suite 227, Orlando, FL 32803.

         1.7      Grant No. 1 R43 AG14316-01  dated September 30, 1997 issued by
                  National   Institutes  of  Health,   6000   Executive   Blvd.,
                  Rockville,  MD 20892-7003 to Essex Corporation,  1040 Woodcock
                  Road, Suite 227, Orlando, FL 32803.


                                      - 1 -


<PAGE>


                       ASSIGNMENT AND ASSUMPTION AGREEMENT
                                                                16 OCTOBER, 1997


         1.8      Contract No.  USZA92-97-C-0055 dated September 16, 1997 issued
                  by the HQ, US Army Special Operations  Command,  Ft. Bragg, NC
                  28307-5200 to Essex  Corporation,  1430 Springhill Road, Suite
                  510, McLean, VA 22102.


         1.9      Contract No. N39998-97-M-5542 dated September 10, 1997 issued
                  by  Dept.  Of Defense, Office  of Special  Technology,  10530
                  Riverview Road, Building 3, Ft. Washington, MD 20744 to Essex
                  Corporation,1430 Springhill Road, Suite 510, McLean, VA 22102.

         1.10     Agreement for Consulting Services, dated June 7, 1993, between
                  Edward H. Frederick, Jr., and Essex Corporation.

         1.11     Agreement  for  Consulting  Services, dated  March  11, 1997,
                  between Stephen A. Povah and Essex Corporation.

         1.12     Subcontract No. 2418A, dated  December 16, 1996, between the
                  University of Central Florida and Essex Corporation.

         1.13     Subcontract No. 2420-01, dated March 21, 1997, between James
                  Madison University and Essex Corporation.

         1.14     Subcontract No. 2418B, dated December 16, 1996, between Jones
                  and Jones Research Associates and Essex Corporation.

2.       FACILITY LEASES

         2.1      Lease,  dated  October  1, 1986,  between  Freida V. Bruer and
                  Essex Corporation,  a Virginia corporation,  for one 14' x 70'
                  mobile office unit.

         2.2      Lease,  dated  December 8, 1994,  between TDP  Corporation,  a
                  Virginia  corporation,   and  Essex  Corporation,  a  Virginia
                  corporation,  for the premises  identified as Suite 510 of the
                  building  located at 1430 Springhill  Road,  McLean  Virginia,
                  commonly known as Tysons Dulles Plaza II.

         2.3      Lease,  dated April 1, 1997,  between  Koger  Equity,  Inc., a
                  Florida  corporation,   and  Essex  Corporation,   a  Virginia
                  corporation,  for the premises  identified as Suite 227 of the
                  building  located  at 1040  Woodcock  Road,  Orlando  Florida,
                  commonly known as Palmetto.

                                      - 2 -


<PAGE>


                       ASSIGNMENT AND ASSUMPTION AGREEMENT
                                                                16 OCTOBER, 1997



3.       CAPITAL EQUIPMENT LEASES

         3.1      Equipment Lease Agreement No. 493167, dated October 12, 1995,
                  between AT&T Capital Leasing Services and Essex Corporation.*


         3.2      Lease No. 118147001, dated October 10, 1995, between Potomac
                  Funding & Leasing Association and Essex Corporation.*

         3.3      Equipment  Lease  dated  October  26,  1995,  between  Copelco
                  Capital,  Inc.,  P.O. Box 728, Park Ridge,  NJ 07656-0728  and
                  Essex Corporation (Minolta copier rental).

         3.4      Equipment  Lease dated December 12, 1996,  between AT&T Credit
                  Corp.,   P.O.  Box  849,   Parsippany,   NJ  07054  and  Essex
                  Corporation (telephone system lease).

         3.5      Equipment  Lease  between  Minolta Leasing  Services (Chemical
                  Leasing), P.O. Box 105819, Atlanta, GA  30348-5819  and  Essex
                  Corporation (Orlando copier lease).

         3.6      Equipment Lease dated December 9, 1996, between  Nissan Motor
                  Acceptance Corp., P.O. Box 105810, Atlanta, GA 30348-5810 and
                  Essex Corporation (truck lease).

         3.7      Equipment  Lease between  Pitney Bowes,  8875 Dex Ellis Trail,
                  #501,  Jacksonville,   FL  32256-1221  and  Essex  Corporation
                  (postage meter rental, model 0015743, serial no. 0001632762).

         * The parties  acknowledge that those certain capital  equipment leases
         numbered 3.1 and 3.2 are in the process of being  assigned and that the
         Seller, with the cooperation of the Buyer, will use its best efforts to
         effect such assignment as soon as possible (the Buyer being entitled to
         the use of the subject  equipment until and after the effective date of
         such assignments).

4.       ACCRUED VACATION, LEASE MAINTENANCE AGREEMENTS AND ACCOUNTS PAYABLE

         4.1      Accrued Vacation

                  Accrued vacation not to exceed $66,825.

         4.2      Accounts payable which relate directly to the Business in a
                  total amount not to exceed $152,170.

                                      - 3 -


<PAGE>


                       ASSIGNMENT AND ASSUMPTION AGREEMENT
                                                                16 OCTOBER, 1997



         4.3      Additional Materials and Miscellaneous Overhead/Indirect Items

                  4.3.1      All of the items listed in  the Sections 4.3.2 and
                             4.3.3 are to be  assumed by the Buyer  only to the
                             extent same were  properly incurred with reference
                             to, and are recoverable by the Buyer under, one of
                             the contracts listed in Section 1 to this Schedule
                             1.3, the  assumption  by the Buyer to be effective
                             only when and if the contract with respect to which
                             the amount is so incurred (and under which it is so
                             recoverable)    has   been    novated    or   fully
                             subcontracted   in  the   name  of   the  Buyer in
                             accordance with Section 1.1.4 of this Agreement.

                  4.3.2      Additional  materials  (direct costs), in an amount
                             not to exceed $150,000,  and travel (direct costs),
                             in an amount not to exceed  $25,000,  to the extent
                             any of the foregoing were properly  incurred by the
                             Seller  pursuant  to one or more of the  government
                             contracts being assigned/novated to the Buyer under
                             this Asset Purchase Agreement.

                  4.3.3      Miscellaneous  overhead/indirect items for which no
                             invoice(s)  have been received will be allocated to
                             each of the  Seller  and Buyer on a pro rata  basis
                             according  to  which  party  benefitted;  provided,
                             however,  that in no event shall Seller's liability
                             exceed  $25,000  for  the  foregoing  miscellaneous
                             overhead/indirect  expenses,  to the  extent any of
                             the foregoing were properly  incurred by the Seller
                             pursuant to one or more of the government contracts
                             being  assigned/novated  to the  Buyer  under  this
                             Asset Purchase Agreement.

5.       LEASE MAINTENANCE AGREEMENTS

         5.1      Maintenance  Agreement  dated  March 31,  1997,  between  Avid
                  Technology,  Inc.,  P.O. Box 3197,  Boston,  MA 02241-3197 and
                  Essex Corporation (video lab maintenance).

         5.2      Maintenance  Agreement  dated  October 26, 1995,  between Gold
                  Office Products,  14620 Rothgeb Drive, Rockville, MD 20850 and
                  Essex Corporation (Minolta copier maintenance agreement).

         5.3      Maintenance  Agreement  dated December 12, 1996, between AT&T,
                  5450 N.W. 33rd Avenue, Suite 106, Ft. Lauderdale, FL 33309 and
                  Essex Corporation (post warranty maintenance).


                                      - 4 -


<PAGE>


                       ASSIGNMENT AND ASSUMPTION AGREEMENT
                                                                16 OCTOBER, 1997


         5.4      Maintenance  Agreement  5320-3128468,  dated January 14, 1997,
                  between  Copytronics,  Inc., P.O. Box 5489,  Jacksonville,  FL
                  32247 and Essex  Corporation  (Minolta copier 5320, serial no.
                  3128468, maintenance and extra copier).

                                      - 5 -


<PAGE>


                       ASSIGNMENT AND ASSUMPTION AGREEMENT
                                                                16 OCTOBER, 1997


                                   SCHEDULE 2

                                    CONSENTS


6.       [reserved]

7.       Novation of Contract No. DAAD05-93-D-7022, dated April 1, 1993, issued
         by  the  Directorate  of  Contracting, USAAPGSA, Ryan  Building,  APG,
         Maryland 21005-5001, to Essex Corporation, 1430 Springhill Road, Suite
         510, McLean, Virginia 22102.

8.       Novation of Contract No. DAAB07-97-C-6013, dated March 14, 1997, issued
         by USA CECOM ACQ CTR,  Washington OPS Office,  2461  Eisenhower  Avenue
         (AMSEL-AC-WBB),  Alexandria, Virginia 22331-0700, to Essex Corporation,
         1430 Springhill Road, Suite 510, McLean, Virginia 22102.

9.       Novation  of  Subcontract  No. 116054-24195, dated  February 11, 1997,
         issued by Fibertek, Inc. ESS, 510 Herndon Parkway,  Herndon, Virginia
         22070,  to  Essex Corporation,  Systems Effectiveness  Division, 1430
         Springhill Road, Suite 510, McLean, Virginia 22102 including Delivery
         Order DAAB07-96-D-H753.

10.      Novation of Contract No. NAS9-97022,  dated December 2, 1996, issued by
         NASA Johnson Space Center, S&LS Acquisition Management,  2101 NASA Road
         1, Houston,  Texas 77058- 3698, to Essex  Corporation,  1430 Springhill
         Road, Suite 510, McLean, Virginia 22102.

11.      Novation  of Contract No. DE-AC04-93AL91124, dated September 15, 1993,
         issued by the Department of Energy, Albuquerque Operations Office, P.O.
         Box  5400,  Albuquerque,  New Mexico  87185-5400, to Essex Corporation,
        1430 Springhill Road, Suite 510, McLean, Virginia 22102.

12.      Novation of Contract-Grant No.1 R43 AA11608-01 dated September 22, 1997
         issued  by  National   Institutes  of  Health,  6000  Executive  Blvd.,
         Rockville,  MD 20892-7003  to Essex  Corporation,  1040 Woodcock  Road,
         Suite 227, Orlando, FL 32803.

13.      Novation  of  Contract No. USZA92-97-C-0055  dated  September 16, 1997
         issued  by  the  HQ, US  Army Special Operations Command, Ft. Bragg, NC
         28307-5200  to  Essex  Corporation,  1430 Springhill  Road, Suite 510,
         McLean, VA 22102.


                                      - 1 -


<PAGE>


                       ASSIGNMENT AND ASSUMPTION AGREEMENT
                                                                16 OCTOBER, 1997


14.      Novation  of Contract  No. N39998-97-M-5542  dated September  10, 1997
         issued  by  Dept. Of  Defense,  Office  of Special  Technology,  10530
         Riverview  Road,  Building  3,  Ft.  Washington,  MD  20744  to  Essex
         Corporation, 1430 Springhill Road, Suite 510, McLean, VA 22102.

15.      Novation  of Contract - Grant No. 1 R43 AG14316-01 dated September 30,
         1997 issued  by National  Institutes of  Health, 6000 Executive Blvd.,
         Rockville, MD  20892-7003 to  Essex  Corporation, 1040  Woodcock Road,
         Suite 227, Orlando, FL 32803.

16.      Assignment of Lease dated December 8, 1994, between TDP Corporation,  a
         Virginia  corporation,  and Essex Corporation,  a Virginia corporation,
         for the premises  identified  as Suite 510 of the  building  located at
         1430 Springhill Road, McLean Virginia, commonly known as Tysons Dulles
         Plaza II.


                                      - 2 -


<PAGE>


                       ASSIGNMENT AND ASSUMPTION AGREEMENT
                                                                16 OCTOBER, 1997


                                   SCHEDULE 3

                             INTELLECTUAL PROPERTIES

1.       LIST:

         1.1      Delta
         1.2      CDL/Passing Gear
         1.3      Information from SED SBIR's to extent not restricted by U. S.
                  Government prior rights.  Per following table:


ESSEX     SHORT TITLE/DATE/AGENCY   PRODUCT     COMMENTS
JOB NO.
2418      VE Assess Test Battery    Software    Project on-going
          12/96-12/98 (NASA)

2381      Indexing - Posture        Software    Technique for converting video
          10/94-10/96 (NSF)                     data

2366      A Smart System (PAT)      Software    Technique for converting videoa
          2/94-2/96 (NASA)                      data

2365      Performance Readiness     Software    A series of visual & cognitive
          2/94-2/96 (NASA)                      tests were computerized

2353      Temporal Factors          Software -  Visual tests were computerized
          6/93-6/95 (NSF)           Temporal
                                     Factors
                                     Battery


2350      Isoperformance            Software    Programs written to analyze
          8/93-8/95 (Brooks AFB)                manpower data

2342      Record/Eval Sim Sick      Software    Technique for converting video
          Device - 4/93-4/95                    data
          (NAVAIR)

2339      Workload Device           Hardware &  Eye movement scoring algorithms
          4/93-4/95 (NAWC)          Software    developed

2326      Dose Equivalency          Software    for DELTA
          9/92-9/94 (NSF)

2320      Dark Focus                Hardware -  Hand held device developed for
          9/92-9/94 (NASA)          Dark Focus  visual test
                                     Device


                                      - 1 -


<PAGE>


                       ASSIGNMENT AND ASSUMPTION AGREEMENT
                                                                16 OCTOBER, 1997

2.       EXCEPTIONS:

         2.1      Letters from various legal counsel regarding US Patent No.
                  5,103,408.

                                      - 2 -


<PAGE>



                                  EXHIBIT C (1)

                    LEASE ASSIGNMENT AND ASSUMPTION AGREEMENT


         THIS ASSIGNMENT OF LEASE (this  "Assignment")  is made and entered into
as of the  16th  day of  October,  1997,  by and  among  FREIDA  V.  BRUER  (the
"Landlord"),  whose  address  is  P.O.  Box  520,  Daleville,  AL  36322,  ESSEX
CORPORATION,  a  Virginia  Corporation  (the  "Assignor"),  whose  address  9150
Guilford  Road,  Columbia,  Maryland  21046-1891,  and STAR  MOUNTAIN,  INC.,  a
Virginia  corporation,  whose  address is 3601  Eisenhower  Avenue,  Alexandria,
Virginia 22304-6439.

                             PRELIMINARY STATEMENTS:

         On 1  October,  1986,  Landlord,  as  landlord,  and ESSEX  CORPORATION
("Essex"),  as  tenant,  entered  into a Lease (the  "Lease")  for one 14' x 70'
mobile office unit (the "Premises").

         The Lease  provides,  among other things,  that said Lease shall not be
assigned without Landlord's prior written consent.

         Assignor  desires  to assign  its  interest  in the Lease and  Assignee
desires to assume Assignor's interest in the Lease.

         NOW,  THEREFORE,  in  consideration  of the  premises  and  the  mutual
covenants  and  conditions   contained  herein,  and  other  good  and  valuable
consideration,  the receipt and adequacy of which are hereby  acknowledged,  the
parties hereby agree as follows:

1.       ASSIGNMENT

         Assignor assigns to Assignee, as of the date of this Assignment, all of
         Assignor's  right,  title,  and interest in and to the Lease.  Assignor
         covenants  (a) that neither  Assignor nor Landlord is in default  under
         the Lease and no notice of default has been sent by either  Assignor or
         Landlord to the other party,  (b) that the Lease is not  encumbered  by
         any prior transfer, assignment, mortgage, or any encumbrance, placed or
         caused by Assignor (c) that  Assignor has full and lawful  authority to
         assign  the  Lease,  (d) that the Lease  attached  hereto as  EXHIBIT A
         constitutes  the entire  agreement  between  Assignor and Landlord with
         respect to the leasing of the  Premises  described in the Lease and the
         Lease  is  in  full  force  and  effect  and  has  not  been  modified,
         supplemented,  or amended in any way, and (e) that the rent required to
         be paid by Assignor for all periods  through the date hereof,  has been
         paid in full.



                                    C(1) - 1

<PAGE>




2.       CONSENT TO ASSIGNMENT

         Landlord  consents to the assignment by Assignor to Assignee.  Landlord
         does not hereby  consent to further  assignment or to any subletting of
         the Premises. Landlord certifies that (a) neither Assignor nor Landlord
         is in default under the Lease and no notice of default has been sent by
         either  Assignor  or  Landlord  to  the  other  party,  (b)  the  Lease
         constitutes  the entire  agreement  between  Assignor and Landlord with
         respect to the leasing of the  Premises  described in the Lease and the
         Lease  is  in  full  force  and  effect  and  has  not  been  modified,
         supplemented,  or amended in any way, (c) the rent  required to be paid
         by Assignor  for all  periods  through the date hereof has been paid in
         full,  and (d) the  Lease  is not  encumbered  by any  prior  transfer,
         assignment,   mortgage,   or   any   encumbrance.   Further,   Landlord
         acknowledges  that no existing or future  default by Assignor  shall be
         deemed a default  by  Assignee  with  respect to any such  defaults  by
         Assignor.

3.       RELEASE

         Landlord  releases  and  discharges  Assignor  from any and all claims,
         demands,  actions,  and causes of action of every  conceivable kind and
         nature  whatsoever  accruing on or after the date hereof which Landlord
         might assert, whether absolute,  contingent, known, or unknown, against
         Assignor by reason of,  arising out of, or  pertaining  to, any matter,
         act, transaction,  occurrence,  omission, or commission relating in any
         manner to the Lease. Assignor releases and discharges Landlord from any
         and all  claims,  demands,  actions,  and  causes  of  action  of every
         conceivable kind and nature  whatsoever,  accruing on or after the date
         hereof which  Assignor  might  assert,  whether  absolute,  contingent,
         known,  or unknown  against  Landlord by reason of,  arising out of, or
         pertaining to, any matter, act, transaction,  occurrence,  omission, or
         commission relating in any manner to the Lease.

4.       NO MODIFICATION

         This Assignment may not be changed, modified, discharged, or terminated
         unless in  writing  signed by the  parties  hereto or their  respective
         successors  and  assigns.  This  Assignment  shall be binding  upon the
         parties and their successors and assigns.

5.       COUNTERPARTS

         This  Assignment  may be signed by each  party  hereto  upon a separate
         copy,  in which  event all of said  copies  shall  constitute  a single
         counterpart to this Assignment.  This Assignment may be executed in any
         number  of  counterparts,  each  of  which  shall  be  deemed  to be an
         original,  but all of which together  shall  constitute but one and the
         same instrument.




                                    C(1) - 2

<PAGE>




6.       ASSUMPTION

         The  Assignee  hereby  assumes all of the  obligations  of the Assignor
under the Assignment.

                                      (End)


                                    C(1) - 3

<PAGE>




         IN WITNESS WHEREOF, the parties hereto have executed this Assignment as
of the date first written above.



LANDLORD:                               FREIDA V. BRUER

                                \Freida V. Bruer\
                        By: ____________________________
                                 Freida V. Bruer

ASSIGNOR:                               ESSEX CORPORATION

                               \Harry Letaw, Jr.\
                        By: ____________________________
                                Harry Letaw, Jr.
                             Chief Executive Officer

ASSIGNEE:                               STAR MOUNTAIN, INC.

                               \Timothy Schimkus\
                        By: ____________________________
                                Timothy Schimkus
                                    Treasurer




<PAGE>






                                  EXHIBIT C(2)

                                     FORM OF
                    LEASE ASSIGNMENT AND ASSUMPTION AGREEMENT


         THIS ASSIGNMENT OF LEASE (this  "Assignment")  is made and entered into
as of the ___ day of ___________, 1997, by and among TDP CORPORATION, a Virginia
corporation  (the  "Landlord"),  whose address is c/o BARNES,  MORRIS,  PARDOE &
FOSTER  MANAGEMENT  SERVICES LLC, 1420 Springhill Road,  Suite 203,  McLean,  VA
22102, ESSEX CORPORATION, a Virginia Corporation (the "Assignor"), whose address
9150 Guilford Road, Columbia,  Maryland 21046-1891,  and STAR MOUNTAIN,  INC., a
Virginia  corporation,  whose  address is 3601  Eisenhower  Avenue,  Alexandria,
Virginia 22304-6439.

                             PRELIMINARY STATEMENTS:

         On 8 December,  1994,  Landlord,  as  landlord,  and ESSEX  CORPORATION
("Essex"),  as tenant,  entered  into a Lease  (the  "Lease")  for the  premises
identified as Suite 510 of the building  located 1430 Springhill  Road,  McLean,
Virginia, commonly known as Tysons Dulles Plaza II (the "Premises").

         The Lease  provides,  among other things,  that said Lease shall not be
assigned without Landlord's prior written consent.

         Assignor  desires  to assign  its  interest  in the Lease and  Assignee
desires to assume Assignor's interest in the Lease.

         Assignor  has  requested  that  Landlord   release  Assignor  from  its
obligations under the Lease and has offered in exchange to release Landlord from
claims that Assignor may have against Landlord.

         NOW,  THEREFORE,  in  consideration  of the  premises  and  the  mutual
covenants  and  conditions   contained  herein,  and  other  good  and  valuable
consideration,  the receipt and adequacy of which are hereby  acknowledged,  the
parties hereby agree as follows:

1.       ASSIGNMENT

         Assignor assigns to Assignee, as of the date of this Assignment, all of
         Assignor's  right,  title,  and interest in and to the Lease.  Assignor
         covenants  (a) that neither  Assignor nor Landlord is in default  under
         the Lease and no notice of default has been sent by either  Assignor or
         Landlord to the other party,  (b) that the Lease is not  encumbered  by
         any prior transfer, assignment,  mortgage, or any encumbrance placed or
         caused by Assignor, (c) that Assignor


                                    C(2) - 1

<PAGE>





         has full and lawful  authority to assign the Lease,  (d) that the Lease
         attached hereto as EXHIBIT A constitutes the entire  agreement  between
         Assignor  and  Landlord  with  respect to the  leasing of the  Premises
         described  in the Lease and the Lease is in full  force and  effect and
         has not been  modified,  supplemented,  or amended in any way,  and (e)
         that the rent  required to be paid by Assignor for all periods  through
         the date hereof, has been paid in full.

2.       CONSENT TO ASSIGNMENT

         Landlord  consents to the assignment by Assignor to Assignee.  Landlord
         does not hereby  consent to further  assignment or to any subletting of
         the Premises. Landlord certifies that (a) neither Assignor nor Landlord
         is in default under the Lease and no notice of default has been sent by
         either  Assignor  or  Landlord  to  the  other  party,  (b)  the  Lease
         constitutes  the entire  agreement  between  Assignor and Landlord with
         respect to the leasing of the  Premises  described in the Lease and the
         Lease  is  in  full  force  and  effect  and  has  not  been  modified,
         supplemented,  or amended in any way, (c) the rent  required to be paid
         by Assignor  for all  periods  through the date hereof has been paid in
         full,  and (d) the  Lease  is not  encumbered  by any  prior  transfer,
         assignment,   mortgage,   or   any   encumbrance.   Further,   Landlord
         acknowledges  that no existing or future  default by Assignor  shall be
         deemed a default  by  Assignee  with  respect to any such  defaults  by
         Assignor.

3.       RELEASE

         Landlord  releases  and  discharges  Assignor  from any and all claims,
         demands,  actions,  and causes of action of every  conceivable kind and
         nature  whatsoever  accruing on or after the date hereof which Landlord
         might assert, whether absolute,  contingent, known, or unknown, against
         Assignor by reason of,  arising out of, or  pertaining  to, any matter,
         act, transaction,  occurrence,  omission, or commission relating in any
         manner to the Lease. Assignor releases and discharges Landlord from any
         and all  claims,  demands,  actions,  and  causes  of  action  of every
         conceivable kind and nature  whatsoever,  accruing on or after the date
         hereof which  Assignor  might  assert,  whether  absolute,  contingent,
         known,  or unknown  against  Landlord by reason of,  arising out of, or
         pertaining to, any matter, act, transaction,  occurrence,  omission, or
         commission relating in any manner to the Lease.

4.       NO MODIFICATION

         This Assignment may not be changed, modified, discharged, or terminated
         unless in  writing  signed by the  parties  hereto or their  respective
         successors  and  assigns.  This  Assignment  shall be binding  upon the
         parties and their successors and assigns.



                                    C(2) - 2

<PAGE>





5.       COUNTERPARTS

         This  Assignment  may be signed by each  party  hereto  upon a separate
         copy,  in which  event all of said  copies  shall  constitute  a single
         counterpart to this Assignment.  This Assignment may be executed in any
         number  of  counterparts,  each  of  which  shall  be  deemed  to be an
         original,  but all of which together  shall  constitute but one and the
         same instrument.

6.       ASSUMPTION

         The  Assignee  hereby  assumes all of the  obligations  of the Assignor
         under the Assignment.




                                    C(2) - 3

<PAGE>





         IN WITNESS WHEREOF, the parties hereto have executed this Assignment as
of the date first written above.



LANDLORD:                                  ATTEST

TDP CORPORATION


By:      ______________________________    By:      ____________________________

         President                                  Secretary

ASSIGNOR:                                  ATTEST

ESSEX CORPORATION


By:      ____________________________      By:      ____________________________
         Harry Letaw, Jr.                           Kimberly DeChello
         Chief Executive Officer                    Assistant Secretary


ASSIGNEE:                                  ATTEST

STAR MOUNTAIN, INC.


By:      ____________________________      By:      ____________________________
         Timothy Schimkus                           Irene M. Byrne
         Treasurer                                  Secretary




<PAGE>


                                  EXHIBIT C(3)
                    LEASE ASSIGNMENT AND ASSUMPTION AGREEMENT


         THIS ASSIGNMENT OF LEASE (this  "Assignment")  is made and entered into
as of the 16th day of October,  1997, by and among KOGER EQUITY, INC., a Florida
corporation  (the  "Landlord"),  whose address is 3986  Boulevard  Center Drive,
Jacksonville,   FL  32207,  ESSEX  CORPORATION,   a  Virginia  Corporation  (the
"Assignor"),  whose address 9150 Guilford Road,  Columbia,  Maryland 21046-1891,
and  STAR  MOUNTAIN,  INC.,  a  Virginia  corporation,  whose  address  is  3601
Eisenhower Avenue, Alexandria, Virginia 22304-6439.

                             PRELIMINARY STATEMENTS:

         On  1  April,  1997,  Landlord,  as  landlord,  and  ESSEX  CORPORATION
("Essex"),  as tenant,  entered  into a Lease  (the  "Lease")  for the  premises
identified  as Suite 227 of the building  located 1040 Woodcock  Road,  Orlando,
Florida, commonly known as Palmetto (the "Premises").

         The Lease  provides,  among other things,  that said Lease shall not be
assigned without Landlord's prior written consent.

         Assignor  desires  to assign  its  interest  in the Lease and  Assignee
desires to assume Assignor's interest in the Lease.

         Assignor  has  requested  that  Landlord   release  Assignor  from  its
obligations under the Lease and has offered in exchange to release Landlord from
claims that Assignor may have against Landlord.

         NOW,  THEREFORE,  in  consideration  of the  premises  and  the  mutual
covenants  and  conditions   contained  herein,  and  other  good  and  valuable
consideration,  the receipt and adequacy of which are hereby  acknowledged,  the
parties hereby agree as follows:

1.       ASSIGNMENT

         Assignor assigns to Assignee, as of the date of this Assignment, all of
         Assignor's  right,  title,  and interest in and to the Lease.  Assignor
         covenants  (a) that neither  Assignor nor Landlord is in default  under
         the Lease and no notice of default has been sent by either  Assignor or
         Landlord to the other party,  (b) that the Lease is not  encumbered  by
         any prior transfer, assignment,  mortgage, or any encumbrance placed or
         caused by the Assignor, (c) that Assignor has full and lawful authority
         to assign the Lease,  (d) that the Lease  attached  hereto as EXHIBIT A
         constitutes  the entire  agreement  between  Assignor and Landlord with
         respect to the leasing of the  Premises  described in the Lease and the
         Lease  is  in  full  force  and  effect  and  has  not  been  modified,
         supplemented,  or amended in any way, and (e) that the rent required to
         be paid by Assignor for all periods  through the date hereof,  has been
         paid in full.



                                    C(3) - 1

<PAGE>



2.       CONSENT TO ASSIGNMENT

         Landlord  consents to the assignment by Assignor to Assignee.  Landlord
         does not hereby  consent to further  assignment or to any subletting of
         the Premises. Landlord certifies that (a) neither Assignor nor Landlord
         is in default under the Lease and no notice of default has been sent by
         either  Assignor  or  Landlord  to  the  other  party,  (b)  the  Lease
         constitutes  the entire  agreement  between  Assignor and Landlord with
         respect to the leasing of the  Premises  described in the Lease and the
         Lease  is  in  full  force  and  effect  and  has  not  been  modified,
         supplemented,  or amended in any way, (c) the rent  required to be paid
         by Assignor  for all  periods  through the date hereof has been paid in
         full,  and (d) the  Lease  is not  encumbered  by any  prior  transfer,
         assignment,   mortgage,   or   any   encumbrance.   Further,   Landlord
         acknowledges  that no existing or future  default by Assignor  shall be
         deemed a default  by  Assignee  with  respect to any such  defaults  by
         Assignor.

3.       RELEASE

         Landlord  releases  and  discharges  Assignor  from any and all claims,
         demands,  actions,  and causes of action of every  conceivable kind and
         nature  whatsoever  accruing on or after the date hereof which Landlord
         might assert, whether absolute,  contingent, known, or unknown, against
         Assignor by reason of,  arising out of, or  pertaining  to, any matter,
         act, transaction,  occurrence,  omission, or commission relating in any
         manner to the Lease. Assignor releases and discharges Landlord from any
         and all  claims,  demands,  actions,  and  causes  of  action  of every
         conceivable kind and nature  whatsoever,  accruing on or after the date
         hereof which  Assignor  might  assert,  whether  absolute,  contingent,
         known,  or unknown  against  Landlord by reason of,  arising out of, or
         pertaining to, any matter, act, transaction,  occurrence,  omission, or
         commission relating in any manner to the Lease.

4.       NO MODIFICATION

         This Assignment may not be changed, modified, discharged, or terminated
         unless in  writing  signed by the  parties  hereto or their  respective
         successors  and  assigns.  This  Assignment  shall be binding  upon the
         parties and their successors and assigns.

5.       COUNTERPARTS

         This  Assignment  may be signed by each  party  hereto  upon a separate
         copy,  in which  event all of said  copies  shall  constitute  a single
         counterpart to this Assignment.  This Assignment may be executed in any
         number  of  counterparts,  each  of  which  shall  be  deemed  to be an
         original,  but all of which together  shall  constitute but one and the
         same instrument.

6.       ASSUMPTION

         The  Assignee  hereby  assumes all of the  obligations  of the Assignor
         under the Assignment.




                                    C(3) - 2

<PAGE>



         IN WITNESS WHEREOF, the parties hereto have executed this Assignment as
of the date first written above.


LANDLORD:                    KOGER EQUITY, INC.

                                      \J. Velma Keen, II\
                             By:      ____________________________
                                      J. Velma Keen, II
                                      Vice President

ASSIGNOR:                    ESSEX CORPORATION

                                      \Harry Letaw, Jr.\
                             By:      ____________________________
                                      Harry Letaw, Jr.
                                      Chief Executive Officer

ASSIGNEE:                    STAR MOUNTAIN, INC.

                                      \Timothy Schimkus\
                             By:      ____________________________
                                      Timothy Schimkus
                                      Treasurer




<PAGE>


                                    EXHIBIT D


$325,000                                                       1 October, 1997


                                  SUBORDINATED
                         NON-NEGOTIABLE PROMISSORY NOTE


         FOR VALUE RECEIVED, the undersigned Star Mountain,  Inc. (the "Maker"),
promises to pay to the order of Essex Corporation (the "Holder"),  the principal
sum of Three  Hundred  Twenty-  five  Thousand  and 00/100  Dollars  ($325,000),
together with interest on the unpaid balance thereof, computed on the basis of a
three hundred and sixty (360) day year, payable in full on 1st January,  1999 as
set forth  herein.  This  promissory  note shall be  referred  to herein as this
"Note".

1.       PRINCIPAL AND INTEREST

         The  principal  amount of this Note shall be  payable  in fifteen  (15)
         equal  monthly  installments  of principal and interest (at the rate of
         nine  percent  9%  per  annum)  in  the  amount  of   $22,989.00.   The
         aforementioned   payments  of  principal  and  accrued  interest  shall
         commence on the 1st day of November,  1997 and shall be made on the 1st
         day of each month thereafter until the principal sum hereof and accrued
         interest  shall be paid in full,  except that if not sooner  paid,  the
         unpaid principal balance and accrued interest, if any, shall be due and
         payable in full on January 1, 1999.

         The aforesaid  monthly  payments when so made shall be applied first to
         the payment of accrued  interest  and the balance to unpaid  principal,
         and upon the Maker's failure to make any of the payments required under
         the  terms of this  Note,  and upon the  Maker's  failure  to cure said
         default  within  twenty  (20) days of receipt by the Maker of notice of
         such default,  at the sole option of the Holder,  the entire  remaining
         unpaid principal and interest under this Note shall immediately  become
         due and payable. If this Note, after default, is placed in the hands of
         an attorney for collection,  whether suit is instituted on same or not,
         the  Maker  hereof  shall pay all  reasonable  costs  and  expenses  of
         collection, including reasonable attorneys' fees.

2.       ASSET PURCHASE AGREEMENT

         This Note is issued  under and  pursuant  to the terms of that  certain
         Asset Purchase  Agreement dated 16 October,  1997 and effective as of 1
         October,   1997,  by  and  between  the  Maker,  as  buyer,  and  Essex
         Corporation, as seller (the "Asset Purchase Agreement").  This Note has
         been given in partial payment of the purchase price for the Transferred
         Assets and the Business.  The payment of any amount due under this Note
         is subject to among other things,  all rights of offset which the Maker
         or its assigns may have under the Asset Purchase


                                      - 1 -

<PAGE>



         Agreement or by applicable law. This Note is  non-negotiable  and shall
         be subject in all  respects  to the terms and  conditions  of the Asset
         Purchase Agreement;  provided,  however,  that the Holder may assign or
         pledge this Note as security to its creditors, notwithstanding anything
         in this Note to the contrary.

3.       SECURITY AGREEMENT

         This Note is secured by and  entitled to the  benefits of that  certain
         Security Agreement of even date herewith. All of the terms,  convenants
         and  conditions  contained  in the  Security  Agreement  are  expressly
         incorporated by reference  herein and made a part hereof.  In the event
         of any conflict  between the provisions of this Note and the provisions
         of the Security Agreement, the terms of the Security Agreement shall be
         paramount and shall govern both the Note and the Security Agreement.

4.       SUBORDINATION

         This Note and the Security Agreement are subject in all respects to all
         terms and  conditions  of that certain  Subordination  Agreement by and
         between  NationsBank  N.A.,  the Maker and the Holder dated 16 October,
         1997 and to the prior payment in full of all other Senior Indebtedness.
         All  of  the  terms,   covenants  and   conditions   contained  in  the
         Subordination  Agreement are expressly incorporated by reference herein
         and made a part  hereof.  In the  event  of any  conflict  between  the
         provisions of this Note or the Security Agreement, on the one hand, and
         the provisions of the Subordination  Agreement,  on the other hand, the
         terms of the  Subordination  Agreement  shall be  paramount  and  shall
         govern both the Note and the Security Agreement.

5.       WAIVER OF DEMAND

         The Maker hereby waives demand, protest, notice of presentment,  notice
         of protest and notice of the nonpayment and dishonor of this Note.

6.       LATE FEE

         If default is made in any payment of the  principal of this Note,  and,
         to the extent permitted by law,  interest hereon shall not be paid when
         due,  whether by  acceleration  or  otherwise,  and such default is not
         cured within  fifteen (15) days after  notice  thereof,  the Holder may
         impose a late fee in the  amount of five  percent  (5%) of the past due
         principal  amount in addition to any other remedies that the Holder may
         have available.

7.       NOTICES

         All notices,  requests, and other communications  hereunder shall be in
         writing  and  shall  be  deemed  to have  been  duly  given  if sent by
         overnight courier or telecopier (i) if to the Holder,


                                      - 2 -

<PAGE>



         to  ESSEX   CORPORATION,   9150  Guilford  Road,   Columbia,   Maryland
         21046-1891,  ATTENTION:  Harry Letaw,  Jr.,  Chief  Executive  Officer,
         telecopier number 301-953-7880,  or at such other address or telecopier
         number  as may  have  been  furnished  to the  Maker by the  Holder  in
         writing,  or  (ii)  if to the  Maker,  to  STAR  MOUNTAIN,  INC.,  3601
         Eisenhower Avenue, Alexandria, Virginia 22304-6439,  ATTENTION: A. Carl
         von Sternberg,  President,  telecopier number 703-960-7009,  or at such
         other  address or telecopier  number as may have been  furnished to the
         Holder by the Maker in writing.

8.       AMENDMENTS AND WAIVERS; SURRENDER

         Neither  this  Note  nor  any  term  hereof  may  be  changed,  waived,
         discharged, or terminated orally or in writing, except that any term of
         this Note may be  amended  and the  observance  of any such term may be
         waived  (either  generally  or  in a  particular  instance  and  either
         retroactively  or  prospectively)  with,  but only  with,  the  written
         consent of the Holder.

9.       BENEFIT

         All of the covenants, stipulations,  promises, and agreements contained
         in this  Note by the  Maker  shall be  binding  upon the  Maker and its
         successors  and shall inure to the benefit of and be enforceable by the
         Holder.

10.      PREPAYMENTS

         The Maker,  at its option,  may prepay at any time  without  premium or
         penalty,  all or any part of the unpaid balance of the principal amount
         of this Note, together with the unpaid interest on the principal amount
         accrued to the date of such payment. Partial prepayment does not excuse
         continuous payments of regular required installments.

11.      MISCELLANEOUS

         This Note shall be governed by and  construed  in  accordance  with the
         laws of the Commonwealth of Virginia without regard to conflicts of law
         principles.  Any  capitalized  terms used herein but not defined  shall
         have the meaning attributable thereto in the Asset Purchase Agreement.



                                      - 3 -

<PAGE>



         IN  WITNESS  WHEREOF,  the Maker has  caused  this Note to be  executed
effective as of the day and year first above written.



                                     STAR MOUNTAIN, INC.

                                              \Timothy Schimkus\
                                              ------------------------------
                                     By:      Timothy Schimkus
                                     Title:   Treasurer




                                      - 4 -

<PAGE>

                                    EXHIBIT E

                                ESCROW AGREEMENT


         THIS ESCROW  AGREEMENT  (the  "Agreement")  dated as of the 16th day of
October,  1997 by and among Star  Mountain,  Inc., a Virginia  corporation  (the
"Buyer"), Essex Corporation, a Virginia corporation (the "Seller") and Arent Fox
Kintner Plokin & Kahn, a District of Columbia  general  partnership (the "Escrow
Agent").

         WHEREAS, the Buyer and the Seller (hereinafter  sometimes  collectively
referred  to as the  "Parties"),  are  parties to that  certain  Asset  Purchase
Agreement  dated 16  October,  1997 and  effective  as, of 1 October,  1997 (the
"Asset  Purchase  Agreement"),  pursuant  to which the Buyer  shall  acquire the
business  and  certain  assets of the Seller  related to the  Seller's  "Systems
Effectiveness  Division" in exchange for certain cash and non-cash consideration
specifically set forth in the Asset Purchase Agreement; and

         WHEREAS, pursuant to the Asset Purchase Agreement, the Buyer has agreed
to place in escrow the sum of  $625,000  to assure  that  certain  contracts  to
novated in the name of the Buyer,  as more  particularly  described in the Asset
Purchase  Agreement  and  listed on EXHIBIT 1 hereto,  are  timely and  properly
novated or deemed to be novated in accordance therewith.

         NOW THEREFORE, it is agreed as follows:

1.       APPOINTMENT OF THE ESCROW AGENT.  Each of the Parties  hereby  appoints
         the Escrow  Agent to serve as escrow  agent with  respect to the Escrow
         (as  defined  below)  pursuant to Section  1.2.7 of the Asset  Purchase
         Agreement,  subject to the terms and conditions of this Agreement,  and
         the Escrow Agent hereby accepts such appointment.

 .        ESTABLISHMENT  OF  ESCROW.   Simultaneously  with  the  execution  and
         delivery of this  Agreement,  the Buyer shall  deposit with the Escrow
         Agent  Six  Hundred  Twenty  Five  Thousand  Dollars  ($625,000)  (the
         "Escrow").  Within 5 business days after the Escrow Agent's receipt of
         the  Escrow,  the Escrow  Agent  shall (i) invest the Escrow in 30 day
         U.S.  Treasury  Bills (so long as the  balance of the  Escrowed  Funds
         exceeds  the  minimum  amount  necessary  to  purchase  a 30 day  U.S.
         Treasury  Bill) or  maintain  the  amount in cash,  to the  extent the
         Escrow Agent, in its sole and absolute discretion deems necessary, and
        (ii)  confirm  its  receipt of the Escrow  from the Buyer by  delivering
         written  notice of such  receipt and  investment  to the Seller and the
         Buyer.  Upon investment of the Escrow,  the funds invested  pursuant to
         the Escrow together with interest  earned thereon,  (are referred to as
         the "Escrowed  Funds").  The Escrowed Funds shall be held in escrow and
         disbursed  by the  Escrow  Agent in  accordance  with the terms of this
         Agreement.  All interest and other earnings on the Escrowed Funds shall
         be held in escrow and  disbursed  to the Buyer by the Escrow Agent upon
         expiration of the Escrow Term (as defined  below).  The Escrowed  Funds
         shall at all times be under the exclusive  control of the Escrow Agent,
         subject, however, to

                                      - 1 -

<PAGE>



         the terms of this  Agreement.  In no event  shall all or any portion of
         the Escrowed Funds be disbursed,  transferred  or released  except upon
         the signature of the Escrow Agent, and then only as expressly permitted
         or required by this Agreement.

3.       TERM OF ESCROW.  The Escrow term (the "Escrow Term") shall begin on the
         date hereof and shall terminate upon the earlier of (i) disbursement of
         all of the Escrowed Funds in accordance with this Agreement or (ii) one
         hundred twenty (120) days after the date of his Agreement.

4.       DISBURSEMENT  OF  FUNDS  FROM  ESCROWED  FUNDS.  The Escrow Agent shall
         disburse  Escrowed  Funds in  accordance  with  the following terms and
         conditions:

         (a) During the Escrow  Term (but in all events no less than 20 business
days prior to the date described in Section 3 (ii) above),  the Seller shall, so
long as it is not in breach of the Asset Purchase  Agreement or any of the other
Documents (as defined in the Asset Purchase  Agreement),  execute and deliver to
the Buyer and the Escrow  Agent a Request  for  Payment in the form of EXHIBIT 2
hereto  each  time  that  one  of the  contracts  listed  in  EXHIBIT  1  hereto
("Scheduled Contract(s)") has been duly novated or deemed to be novated into the
name of the Buyer in accordance with the Asset Purchase  Agreement.  The "Amount
Requested"  by the  Seller  in any such  notice  shall be the  lesser of (i) the
applicable "Value Assigned" to the subject Scheduled  Contract novated or deemed
to be  novated  (as  stated on Exhibit 1 hereto) or (ii) the amount by which the
applicable  Value  Assigned to all Scheduled  Contracts  theretofore  novated or
deemed to be  novated  (and with  respect to each of which the Buyer has given a
Confirmatory Notice in accordance with this Agreement) plus the applicable Value
Assigned  of the  Scheduled  Contract  in question  exceeds  $250,000.  Within 5
business days of the Buyer's receipt of said Request for Payment,  provided that
the Seller has  established  to the  Buyer's  reasonable  satisfaction  that the
subject  Scheduled  Contract  has been duly  novated  or deemed to be novated in
accordance  with the  terms of the Asset  Purchase  Agreement,  the  Buyer  will
execute and deliver to the Escrow Agent and the Seller a Confirmatory  Notice in
the form of EXHIBIT 3 hereto stating that it confirms same and  authorizing  and
directing  the  Escrow  Agent to pay to the  Seller (i) the lesser of the amount
requested  on the subject  Request for Payment and (ii) the amount  described in
Section 4(e) below; provided, however, that if the Buyer either does not deliver
a  Confirmatory  Notice in the form of  EXHIBIT 3 hereto to the  Seller  and the
Escrow  Agent or does not  deliver  a  Contested  Amount  Notice  in the form of
EXHIBIT 5 hereto contesting in writing the Seller's Request for Payment within 5
business  days of the Buyer's  receipt of such Request for  Payment,  the Escrow
Agent shall  disburse  to the Seller the amount  indicated  in such  Request for
Payment within 5 days after the expiration of such 5 business day period. Within
5 business days of the receipt by the Escrow Agent of a Confirmatory Notice, the
Escrow Agent will  disburse to the Seller the amount which the Buyer  directs to
be released pursuant to such Confirmatory Notice.

         (b)  Provided  that the  Seller is not in breach of the Asset  Purchase
Agreement or any of the other Documents, the Seller may on or before 20 October,
1997 and then again on or before 23  October,  1997  deliver to the Buyer and to
the Escrow  Agent a Request for Advance  Payment in the form of EXHIBIT 4 hereto
requesting the Escrow Agent to disburse each time to the Seller the sum of


                                      - 2 -

<PAGE>



$125,000.  Within 5  business  days of the Escrow  Agent's  receipt of each such
Request for Advance  Payment and provided that no written  objection in the form
of a Contested  Amount Notice in the form of EXHIBIT 5 hereto is received by the
Escrow Agent prior to disbursement, the Escrow Agent shall each time disburse to
the Seller  the lesser of the sum of  $125,000  from the  Escrowed  Funds (for a
total of $250,000) or the amount provided in Section 4(e) below.

         (c) In the event that the Buyer  delivers  to the Escrow  Agent and the
Seller a  Contested  Amount  Notice in the form of  EXHIBIT 5 hereto  before the
expiration  of the 5 business day period in response to a Request for Payment or
a Request  for  Advance  Payment,  in each case duly  given by the Seller to the
Buyer and the Escrow Agent under this Section 4, the amount so requested in such
contested Request for Payment or Request for Advance Payment shall be considered
a contested amount.  All contested amounts shall be held and either disbursed by
the Escrow Agent in accordance  with any joint letter of instruction  signed and
delivered by the Seller and the Buyer to the Escrow Agent (in form and substance
satisfactory  to the Escrow  Agent),  interpleaded  in a court of Escrow Agent's
choosing or otherwise  disbursed in accordance with this Agreement.  All amounts
other than contested amounts (and amounts theretofor  disbursed to Seller) shall
upon the expiration of the Escrow Term, be disbursed to the Buyer.  In the event
the Buyer  timely  objects to any  Request  for  Payment or Request  for Advance
Payment by sending a Contested  Amount  Notice,  the Buyer shall send a separate
notice to the Seller setting forth in reasonable  detail its basis for asserting
that there is a contested  amount.  Such  separate  notice shall be given by the
Buyer to the Seller  within the  applicable 5 business  day period.  The parties
agree that the failure of the Buyer in giving such separate  notice to state any
claim or amount in any such  separate  notice  shall not  constitute a waiver of
such claim or amount or in any manner or to any extent  compromise  or prejudice
any claim not stated therein.

         (d) Upon termination of the Escrow in accordance with Section 3 hereof,
the Escrow  Agent shall  promptly  disburse to the Buyer all Escrow Funds (other
than contested amounts pursuant to Section 4(c) above and 4(e) below and amounts
theretofor  disbursed to Seller) including earnings with respect to the Escrowed
Funds,  after converting such Escrowed Funds to cash (to the extent the Escrowed
Funds have not  already  been  converted  by the Escrow  Agent into  cash).  All
amounts  earned  with  respect to the  Escrowed  Funds  shall be reported by the
Escrow  Agent as having  been  received  by the Buyer  (i.e.  under the  Buyer's
Federal employer identification number).

         (e) In the event that the Buyer reasonably  believes at any time during
the Escrow Term that the Seller is in breach of the Asset Purchase  Agreement or
any of the other Documents, the Buyer shall be entitled to reduce the amount due
to the Seller  under any Request  for Payment or Request for Advance  Payment by
the amount by which the Buyer's  good faith  estimate  of the total  damages the
Buyer has or may suffer as a result of all such  breaches by the Seller  exceeds
(i) the total of the amount  requested  in the  subject  Request  for Payment or
Request for Advance Payment and (ii) any amounts previously so requested,  which
amounts would have been, but for this Section 4(e), payable, to the Seller under
this  Agreement.  The total of all amounts  withheld from the Seller pursuant to
this  Section 4(e) shall be  considered a contested  amount for purposes of this
Section 4. The failure of the Buyer to cause any amount to be withheld  from the
Seller in accordance with this


                                      - 3 -

<PAGE>



Section 4(e) or  otherwise  shall not  constitute  a waiver of any default,  the
Buyer being entitled to exercise all rights and remedies which it has under this
Agreement,  the Asset Purchase Agreement,  under any of the other Documents,  by
law or otherwise.

5.       REINVESTMENT  OF   ESCROWED  FUNDS.    During  the  Escrow  Term,  the
         Escrow Agent shall reinvest the Escrowed Funds by purchasing one month
         U.S.  Treasury  Bills.  The Escrow Agent shall give the Seller and the
         Buyer  prompt  written  notice  of all  reinvestments,  including  the
         reinvestment  described in the preceding sentence,  made by the Escrow
         Agent of the Escrowed Funds or any portion thereof.

6.       EXPENSES.  The Escrow Agent shall be entitled to  reimbursement  of all
         reasonable expenses,  commissions,  fees and other costs, including any
         reasonable  costs in  connection  with the  interpleader  described  in
         Section 8(k), incurred by the Escrow Agent acting pursuant to the terms
         of this  Agreement.  Such expenses shall include any  reasonable  legal
         costs  incurred by the Escrow  Agent  acting in its  capacity as escrow
         agent hereunder.  All such reasonable fees, costs and expenses shall be
         borne  equally  by the Seller and the Buyer and shall be payable to the
         Escrow Agent monthly within thirty (30) days after invoice.

7.       DUTIES OF THE ESCROW AGENT.  The Escrow Agent hereby agrees to perform
         the following duties under this Agreement:

         (a) Receive, and use reasonable efforts to act as custodian for, the
Escrowed Funds delivered to the Escrow Agent pursuant to this Agreement;

         (b) Take such actions with respect to investment  and  reinvestment  of
the Escrowed Funds,  and  disposition,  delivery and application of the Escrowed
Funds as may be expressly permitted or required pursuant to this Agreement;

         (c) Provide  the   notices  and  communications  as  may  be  expressly
permitted or required by this Agreement; and

         (d) Take such other  actions  and perform  such other  duties as may be
required on the part of the Escrow Agent under the terms of this  Agreement,  or
pursuant to any  modifications or amendments  hereto affecting the duties of the
Escrow Agent to the extent consented to by the Escrow Agent in writing.

8.       ADDITIONAL MATTERS WITH RESPECT TO THE ESCROW AGENT AND SUBSTITUTION OF
         THE ESCROW AGENT.  The following additional provisions shall govern the
         rights,  obligations  and  liabilities  of the  Escrow Agent under this
         Agreement.

         (a) The Escrow Agent's duties and responsibilities  shall be limited to
those expressly set forth in this Agreement, and it shall not be subject to, nor
obligated to recognize,  any other  agreement  between any or all of the parties
hereto even though reference thereto may be made


                                      - 4 -

<PAGE>



herein; provided,  however, that with the Escrow Agent's written acknowledgment,
this  Agreement  may be amended at any time or times by an instrument in writing
signed by or on behalf of all the parties hereto.

         (b) If the Escrow  Agent  believes  it to be  reasonably  necessary  to
consult  with legal  counsel  (which may be partners or  employees of the Escrow
Agent) or other  professionals  concerning any of its duties in connection  with
this Agreement, or in case it becomes involved in litigation on account of being
escrow  agent  hereunder  (except  if such  litigation  arises  from  the  gross
negligence  or willful  misconduct  of the Escrow Agent) or on account of having
received  property subject hereto,  or in case the Escrow Agent  interpleads the
Escrowed Funds as described in Section 8(k),  then in all cases,  its reasonable
costs,  expenses,  and  attorneys'  fees and other  professional  fees  shall be
reimbursed as provided in Section 6 hereof.

         (c) The Escrow  Agent  shall keep  proper  books of record and  account
relating to the Escrowed Funds.

         (d) In the event that the Escrow Agent receives  instructions  from the
Seller or the Buyer with respect to the Escrowed Funds, which  instructions,  in
the Escrow Agent's reasonable  opinion,  are in conflict with other instructions
provided  by a party to this  Agreement  or with any of the  provisions  of this
Agreement,  the Escrow Agent shall immediately  notify in writing the Seller and
the Buyer of such  conflict  whereupon  the Escrow  Agent  shall be  entitled to
refrain  from  taking any action  until it shall be  directed  otherwise  either
pursuant  to a (i) a letter  of  instructions  signed  by both the Buyer and the
Seller  directing the  disposition  of such funds or (ii) a certified  copy of a
final judgment, or if appeal is taken, a finally determined judgment, of a court
of competent  jurisdiction  providing for the  disposition of the funds.  In the
event of a conflict  between the provisions of Section 4 hereof and this Section
8(d), the provisions of Section 4 hereof shall govern.

         (e) The Escrow  Agent shall have no  liability to anyone for any action
taken or omitted by the Escrow Agent acting in reliance upon instructions  given
by the Seller and the Buyer.

         (f) The Escrow  Agent shall have no liability to anyone for an error in
judgment or for any act done or omitted by the Escrow Agent in good faith unless
caused by or arising out of any gross  negligence  or willful  misconduct of the
Escrow Agent.

         (g) The  Escrow  Agent  shall be  entitled  to rely  upon  any  writing
furnished  to the Escrow  Agent by the Seller or the Buyer and shall be entitled
to treat such writing as genuine and as the writing it purports to be.

         (h) The Escrow Agent may resign at any time by giving at least ten (10)
days'  prior  written  notice  thereof to the other  parties  hereto;  provided,
however,  that the effective date of such  resignation by the Escrow Agent shall
not be earlier than the  effective  date of the  appointment  of a successor the
Escrow Agent pursuant to Section 8(i) hereof.



                                      - 5 -

<PAGE>



         (i) If at any time the Escrow Agent resigns,  is removed,  dissolves or
otherwise  becomes  incapable  of acting,  or the  position of the Escrow  Agent
becomes vacant for any reason,  the Buyer shall promptly appoint a successor the
Escrow  Agent to fill such  vacancy.  If the Buyer  fails to appoint a successor
agent prior to the effective date of the Escow Agent's  resignation,  the Escrow
Agent shall be entitled to appoint a successor of its choosing.

         (j) Each  successor  Escrow Agent  appointed  hereunder  shall execute,
acknowledge and deliver to its  predecessor,  the Seller and the Buyer a written
instrument accepting such appointment and agreeing to be bound by the provisions
of this Agreement.  Immediately  following the appointment of a successor Escrow
Agent,  the  predecessor  Escrow Agent shall  transfer all funds,  documents and
instruments  held under this  Agreement to such  successor  Escrow Agent and the
predecessor  Escrow Agent shall thereafter be absolved and released from any and
all further liability  hereunder (other than liability for matters  attributable
to  the  predecessor  Escrow  Agent's  bad  faith,  gross  negligence,   willful
misconduct or violation of its express obligations under this Agreement).

         (k) In the  event  of a  dispute  between  the  Buyer  and  the  Seller
concerning the right of the other party to the Escrowed Funds,  the Escrow Agent
shall have the right, in its sole  discretion,  to convert the Escrowed Funds to
cash and interplead the Escrowed Funds into a court of competent jurisdiction.

9.       INDEMNIFICATION.  The Seller and the Buyer jointly and severally  shall
         indemnify and hold the Escrow Agent  harmless  from  actions,  suits or
         other  charges  incurred  by or assessed  against the Escrow  Agent for
         anything done or omitted by the Escrow Agent in the  performance of its
         duties  hereunder,  except those  matters  which result from the Escrow
         Agent's  bad  faith,  gross  negligence  or  willful  misconduct.  This
         indemnity  shall  survive the  resignation  of the Escrow  Agent or the
         termination of this Agreement.

10.      NOTICES. Any notice,  demand, consent, authorization, request, approval
         or  other  communication  given  pursuant  to  this  Agreement shall be
         effective and valid only if in writing (including facsimile), signed by
         the party giving such notice, addressed as follows:

         If to Seller:

                  Essex Corporation
                  9150 Guilford Road
                  Columbia, Maryland  21046-1891
                  Attn:  Harry Letaw, Jr.
                  Facsimile:  (301) 953-7880



                                      - 6 -

<PAGE>



         with a copy to:

                  De Martino Finkelstein Rosen & Virga 1818 N Street, N.W.
                  Suite 400
                  Washington, D.C.  20036
                  Attn:  Ralph V. De Martino, Esquire
                  Facsimile:  (202) 659-1290

         If to the Buyer:

                  Star Mountain, Inc.
                  3601 Eisenhower Avenue
                  Alexandria, Virginia  22304-6439
                  Attn: A. Carl von Sternberg, President
                  Facsimile:  (703) 960-7009

         with a copy to:

                  Arent Fox Kintner Plotkin & Kahn
                  1050 Connecticut Avenue, N.W.
                  Washington, D.C.  20036-5337
                  Attn:  David C. Haas
                  Facsimile:  (202) 857-6395

         If to the Escrow Agent:

                  Arent Fox Kintner Plotkin & Kahn
                  1050 Connecticut Avenue, N.W.
                  Washington, D.C. 20036-5339
                  Attn:  David C. Haas
                  Facsimile:  (202) 857-6395

All such notices shall be considered given on the date when received (refusal of
delivery shall constitute  receipt) or if sent by telecopy when transmitted if a
confirmation of transmission is produced by the sending  machine.  Any party may
change its address by giving notice of such change to the other parties.

11.      GOVERNING  LAW.  This  Agreement  shall be  construed  and  enforced in
         accordance  with,  and the rights of the parties  shall be governed by,
         the laws of the  District  of  Columbia,  excluding  the  choice-of-law
         principles  of the law of the District of Columbia  that would  require
         the  application of the laws of a jurisdiction  other than the District
         of Columbia.



                                      - 7 -

<PAGE>



12.      WAIVER OF JURY TRIAL.  EACH OF THE SELLER, THE BUYER AND THE ESCROW
         AGENT KNOWINGLY, VOLUNTARILY AND INTENTIONALLY WAIVES (TO THE
         EXTENT PERMITTED BY APPLICABLE LAW) ANY RIGHT TO TRIAL BY JURY IN
         ANY DISPUTE, WHETHER SOUNDING IN CONTRACT, TORT, OR OTHERWISE,
         BETWEEN ANY OF THE SELLER, THE BUYER OR THE ESCROW AGENT ARISING
         OUT OF OR RELATED TO THE TRANSACTIONS CONTEMPLATED BY THIS
         AGREEMENT.  ANY OF THE SELLER, THE BUYER OR THE ESCROW AGENT MAY
         FILE AN ORIGINAL COUNTERPART OR A COPY OF THIS AGREEMENT WITH
         ANY COURT AS WRITTEN EVIDENCE OF THE CONSENT OF THE PARTIES
         HERETO TO THE WAIVER OF THEIR RIGHT TO TRIAL BY JURY.

13.      MERGER.   This  Agreement represents the final agreement of the Seller,
         the  Buyer  and the  Escrow Agent with respect to the matters contained
         herein   and   may  not   be  contradicted  by  evidence  of  prior  or
         contemporaneous  agreements, or subsequent oral agreements, between any
         of the Seller, the Buyer or the Escrow Agent.

14.      COUNTERPARTS.   This Agreement may be executed in counterparts, each of
         which shall be  deemed an  original  hereof, but  all of which shall be
         deemed a single document.

15.      DEFINITIONS.  All capitalized terms used herein and not defined herein
         shall  have  the  meanings  ascribed  thereto  in  the  Asset Purchase
         Agreement.

16.      SEVERABILITY.  Each part of this Agreement is intended to be severable.
         If any term,  covenant,  condition  or  provision  hereof is  unlawful,
         invalid  or  unenforceable   for  any  reason   whatsoever,   and  such
         illegality,   invalidity  or  unenforceability   does  not  affect  the
         remaining parts of this Agreement, then all such remaining parts hereof
         shall be valid and enforceable and have full force and effect as if the
         invalid or unenforceable part had not been included.

17.      RIGHTS CUMULATIVE; WAIVERS.   The  rights  of each of the parties under
         this Agreement are cumulative  and may  be exercised  as  often  as any
         party  considers  appropriate.   The  rights  of  each  of  the parties
         hereunder shall not be capable of being waived or varied otherwise than
         by an express waiver or  variation  in writing.  Failure to exercise or
         any delay in exercising  any of such rights also shall not operate as a
         waiver or  variation of  that or  any other  such right.  Defective  or
         partial  exercise of any of such rights shall not preclude any other or
         further exercise  of that or any other such right.  No act or course of
         conduct  or  negotiation  on the  part of  any party  shall in  any way
         preclude  such party  from exercising  any such  right  or constitute a
         suspension or any variation of any such right.

18.      HEADINGS.  The  headings  contained in this Agreement are inserted for
         convenience  only and shall not affect the meaning or interpretation of
         this Agreement or any provision hereof.



                                      - 8 -

<PAGE>



19.      CONSTRUCTION.

         (a) The terms "hereby", "hereof", "hereto", "herein",  "hereunder", and
any similar terms shall refer to this Agreement.

         (b) Words of the  masculine,  feminine or neuter  gender shall mean and
include the correlative words of other genders, and words importing the singular
number shall mean and include the plural number and vice versa.

         (c)  Words  importing   persons  shall  include  firms,   associations,
partnerships, corporations and other legal entities, including public bodies, as
well as natural persons.

         (d) The  terms  "include",  "including"  and  similar  terms  shall  be
construed as if followed by the phrase "without limitation".

20.      ASSIGNMENT.  This  Agreement  and  the  terms,  covenants,  conditions,
         provisions, obligations, undertakings, rights and benefits hereof shall
         be binding  upon, and  shall inure to  the benefit of,  the undersigned
         parties   and   their  respective  heirs,   executors,  administrators,
         representatives and permitted successors and assigns.

21.      NO THIRD PARTY BENEFICIARIES.  No  person,  firm  or other entity other
         than  the parties  hereto and  their permitted  successors  and assigns
         shall have any rights or claims under this Agreement.

22.      CONTROVERSY.  In  the event of  any controversy or claim arising out of
         or relating to  this Agreement or  the Asset  Purchase Agreement or any
         document executed pursuant to the Asset Purchase Agreement, the parties
         consent  to the  Escrow Agent acting  as counsel to  the Buyer  and the
         Escrow  Agent shall not  be disqualified from representing the Buyer by
         reason of its service as the Escrow Agent (including but not limited to
         rendering advice to the Buyer with respect to any default by the Seller
         under  this  Agreement,  the  Asset  Purchase  Agreement  or  the other
         Documents or with respect to the manner in which it should comply with
         its  obligations  under this  Agreement) provided that the Escrow Agent
         resigns   as escrow agent hereunder within 15 days of a written request
         of the  Seller, such request to make specific reference to this Section
         22.

                                      (End)



                                      - 9 -

<PAGE>




         IN WITNESS  WHEREOF,  the parties  hereto have executed this  Agreement
effective as of the day and year first above written.


                         SELLER

                         ESSEX CORPORATION, A VIRGINIA CORPORATION


                         By:      \Harry Letaw, Jr.\
                                  Harry Letaw, Jr.
                                  Chief Executive Officer


                         BUYER

                         STAR MOUNTAIN, INC., A VIRGINIA CORPORATION


                         By:      \Timothy Schimkus\
                                  Timothy Schimkus
                                  Treasurer


                         ESCROW AGENT

                         ARENT FOX KINTNER PLOTKIN & KAHN


                         By:      \David C. Hass\
                                  David C. Haas
                                  Partner


                                     - 10 -

<PAGE>


                                                                ESCROW AGREEMENT
                                                                 16 OCTOBER 1997

                                    EXHIBIT 1


                            ESCROW DRAWDOWN SCHEDULE


         1.       Contract No. DAAD05-93-D-7022, dated April 1, 1993, issued by
                  the Directorate of Contracting, USAAPGSA, Ryan Building, APG,
                  Maryland  21005-5001,  to Essex  Corporation, 1430 Springhill
                  Road, Suite 510, McLean, Virginia 22102.

                  Value Assigned:   If novated: $75,000
                                    If not novated and not deemed
                                    novated: $56,250

         2.       Contract No. DAAB07-97-C-6013, dated March 14, 1997, issued by
                  USA CECOM ACQ CTR,  Washington  OPS  Office,  2461  Eisenhower
                  Avenue (AMSEL-AC-WB- B), Alexandria,  Virginia 22331-0700,  to
                  Essex  Corporation,  1430 Springhill  Road, Suite 510, McLean,
                  Virginia 22102.

                  Value Assigned: $55,000

         3.       Subcontract No. 116054-24195,  dated February 11, 1997, issued
                  by  Fibertek, Inc. ESS, 510 Herndon Parkway, Herndon, Virginia
                  22070,  to Essex Corporation,  Systems Effectiveness Division,
                  1430  Springhill  Road,  Suite  510,  McLean,  Virginia  22102
                  together  with 2  delivery orders related thereto [novation or
                  deemed  novation to  occur once subcontract  and both delivery
                  orders are novated or deemed novated].

                  Value Assigned: $55,000

         4.       Contract No.  NAS9-97022,  dated  December 2, 1996,  issued by
                  NASA Johnson Space Center, S&LS Acquisition  Management,  2101
                  NASA Road 1, Houston, Texas 77058-3698,  to Essex Corporation,
                  1430 Springhill Road, Suite 510, McLean, Virginia 22102.

                  Value Assigned: If novated: $50,000
                                  If not novated and not deemed
                                novated: $37,500




                                      - 1 -



<PAGE>


                                                                ESCROW AGREEMENT
                                                                 16 OCTOBER 1997


         5.       Contract  No.  DE-AC04-93AL91124, dated  September  15, 1993,
                  issued  by the Department  of Energy, Albuquerque  Operations
                  Office, P.O. Box 5400, Albuquerque, New Mexico 87185-5400, to
                  Essex  Corporation,  1430 Springhill Road, Suite 510, McLean,
                  Virginia 22102.

                  Value Assigned: If novated: $350,000
                                  If not novated and not deemed
                                novated: $262,500

         6.       Contract No. - Grant No. 1 R43 AA11608-01 dated September 22,
                  1997 issued by  National Institutes of Health, 6000 Executive
                  Blvd.,  Rockville,  MD 20892-7003 to Essex Corporation,  1040
                  Woodcock Road, Suite 227, Orlando, FL 32803.

                  Value Assigned: $10,000.

         7.       Contract No. - Grant No. 1 R43 AG14316-01 dated September 30,
                  1997 issued by  National Institutes of Health, 6000 Executive
                  Blvd.,  Rockville,  MD 20892-7003 to Essex Corporation,  1040
                  Woodcock Road, Suite 227, Orlando, FL 32803.

                  Value Assigned: $10,000.

         8.       Contract No. USZA92-97-C-0055 dated September 16, 1997 issued
                  by the HQ, US Army Special  Operations Command, Ft. Bragg, NC
                  28307-5200 to Essex  Corporation, 1430 Springhill Road, Suite
                  510, McLean, VA 22102.

                  Value Assigned: $10,000.

         9.       Contract No. N39998-97-M-5542 dated September 10, 1997 issued
                  by Dept.  Of Defense  Office  of  Special  Technology,  10530
                  Riverview Road, Building 3, Ft. Washington, MD 20744 to Essex
                  Corporation,1430 Springhill Road, Suite 510, McLean, VA 22102.

                  Value Assigned: $10,000.







                                      - 2-



<PAGE>


                                                                ESCROW AGREEMENT
                                                                 16 OCTOBER 1997

                                    EXHIBIT 2

                               REQUEST FOR PAYMENT

To:               Arent Fox Kintner Plotkin & Kahn
                  1050 Connecticut Avenue, N.W.
                  Washington, DC 20036-5339
                  Attn: David C. Haas

and:              Star Mountain, Inc.
                  3601 Eisenhower Avenue
                  Alexandria, Virginia 22304-6439
                  Attn: Carl von Sternberg, President

                                                                          [Date]

Essex Corporation  hereby certifies to the Escrow Agent and Star Mountain,  Inc.
that the  Scheduled  Contract  (as that term is defined in that  certain  Escrow
Agreement by and among Star  Mountain,  Inc.,  Essex  Corporation  and Arent Fox
Kantner Plotkin & Kahn dated 16 October,  1997 (the "Escrow  Agreement")) listed
below  has  been  duly  novated  in  the  name  of  Star  Mountain,  Inc.  as of
_______________  [insert date of novation] and that Essex Corporation is not, as
of the date of this Notice,  in breach of any of its obligations under the Asset
Purchase Agreement or any of the other Documents (as that term is defined in the
Asset Purchase Agreement between Essex Corporation and Star Mountain, Inc. dated
16  October,  1997) and that it is  entitled  to receive  that  amount set forth
below.

 Contract Novated:  [description of Scheduled Contract novated per EXHIBIT 1 to
                                                                   ---------
                    Escrow Agreement]

 Value Assigned:    ["Value Assigned" of Scheduled Contract novated or
                    deemed novated per EXHIBIT 1 to Escrow Agreement]

 Amount Requested:          $_________________


                                ESSEX CORPORATION

                                ----------------------
                                Harry Letaw, Jr.
                                Chief Executive Officer



<PAGE>


                                                                ESCROW AGREEMENT
                                                                 16 OCTOBER 1997

                                    EXHIBIT 3

                               CONFIRMATORY NOTICE

To:               Arent Fox Kintner Plotkin & Kahn
                  1050 Connecticut Avenue, N.W.
                  Washington, DC 20036-5339
                  Attn: David C. Haas

and:              Essex Corporation
                  9150 Guilford Road
                  Columbia, Maryland 21046-1891
                  Attn: Harry Letaw, Jr.

                                                                          [Date]

Dear Mr. Haas:

Star Mountain,  Inc.  hereby  authorizes and directs Arent Fox Kintner Plotkin &
Kahn,  as escrow agent under that  certain  Escrow  Agreement  dated 16 October,
1997, by and among Star Mountain,  Inc., Essex Corporation and Arent Fox Kintner
Plotkin & Kahn, to disburse to Essex  Corporation the sum of  $_____________  in
accordance with the Seller's Request for Payment dated  _______________,  a copy
of which is attached hereto.

                                Very truly yours,

                               STAR MOUNTAIN, INC.


                              ----------------------
                              A. Carl von Sternberg
                              President



Attached: Seller's Request for Payment



<PAGE>


                                                                ESCROW AGREEMENT
                                                                 16 OCTOBER 1997

                                    EXHIBIT 4

                           REQUEST FOR ADVANCE PAYMENT

To:               Star Mountain, Inc.
                  3601 Eisenhower Avenue
                  Alexandria, Virginia 22304-6439
                  Attn: Carl von Sternberg, President

and:              Arent Fox Kintner Plotkin & Kahn
                  1050 Connecticut Avenue, N.W.
                  Washington, DC 20036-5339
                  Attn: David C. Haas

                                                                          [Date]

Essex  Corporation  hereby  certifies  to Star  Mountain,  Inc. and to Arent Fox
Kintner  Plotkin & Kahn,  as escrow agent that it is not, as of the date of this
request,  in breach of any of its obligations under the Asset Purchase Agreement
between Essex  Corporation  and Star Mountain,  Inc. dated 16 October,  1997 and
hereby requests that the Escrow Agent disburse to the Seller the sum of $125,000
pursuant  to Section 4 of the Escrow  Agreement  dated 16  October,  1997 by and
among Essex  Corporation,  Star Mountain,  Inc. and Arent Fox Kintner  Plotkin &
Kahn as Escrow Agent.


                                ESSEX CORPORATION


                                ----------------------
                                Harry Letaw, Jr.
                                Chief Executive Officer




<PAGE>


                                                                ESCROW AGREEMENT
                                                                 16 OCTOBER 1997

                                    EXHIBIT 5

                             CONTESTED AMOUNT NOTICE

To:               Arent Fox Kintner Plotkin & Kahn
                  1050 Connecticut Avenue, N.W.
                  Washington, DC 20036-5339
                  Attn: David C. Haas

and:              Essex Corporation
                  9150 Guilford Road
                  Columbia, Maryland 21046-1891
                  Attn: Harry Letaw, Jr.

                                                                          [Date]

Dear Mr. Haas:

Star Mountain,  Inc.  hereby  authorizes and directs Arent Fox Kintner Plotkin &
Kahn,  as escrow agent under that  certain  Escrow  Agreement  dated 16 October,
1997, by and among Star Mountain,  Inc., Essex Corporation and Arent Fox Kintner
Plotkin & Kahn, to disburse to Essex Corporation the sum of $_____________. This
amount is to disbursed  with  reference to the  Seller's  Request for  [Payment]
[Advance  Payment] dated  ___________,  a copy of which is attached hereto.  The
difference  between  the amount  stated  above and the amount  requested  in the
attached  Request  for  [Payment]  [Advance  Payment]  should be  regarded  as a
"contested  amount"  as  defined  in  accordance  with the  terms of the  Escrow
Agreement.

                                Very truly yours,

                               STAR MOUNTAIN, INC.


                              ----------------------
                              A. Carl von Sternberg
                              President

Attached: Seller's Request for Payment [Advance Payment]


<PAGE>


                                    EXHIBIT F

                               SECURITY AGREEMENT


         THIS SECURITY AGREEMENT, dated and effective as of 16 October, 1997, by
and between Star  Mountain,  Inc.,  a Virginia  corporation  with its  principal
offices located at 3601 Eisenhower Avenue, Alexandria,  Virginia 22304-6439 (the
"Borrower"),  and Essex Corporation, a Virginia corporation,  with its principal
offices  located at 9150  Guilford  Road,  Columbia,  Maryland  21046-1891  (the
"Secured Party").

                              W I T N E S S E T H:

         WHEREAS,  Secured  Party and  Borrower  have  entered into that certain
Asset Purchase Agreement dated 16 October,  1997 and effective 1 October,  1997,
by and between  Borrower  and Secured  Party (the  "Asset  Purchase  Agreement")
pursuant to which  Borrower has purchased  certain assets from Secured Party for
which a  promissory  note in the  original  principal  amount  of Three  Hundred
Twenty-Five  Thousand  and  no/100  Dollars  ($325,000)  has been  given as part
payment therefore (the "Note").  The Note is dated as of 1 October,  1997 and is
made payable to Secured  Party,  with principal and interest as set forth in the
Note; and

         WHEREAS,  Secured  Party  has made and  agreed to make such loan on the
express condition, among others, that Borrower execute and deliver this Security
Agreement.

         NOW,  THEREFORE,  in  consideration  of said loan, the premises and the
mutual  covenants and promises  herein  contained,  the parties  hereto agree as
follows:

1.       DEFINITIONS

         In addition to the terms that are defined  above,  the following  terms
         shall be defined as follows:

         "Borrower's address" means the address of Borrower as first set forth
         above.

         "Collateral" shall have the meaning set forth in Section 4 below.

         "Equipment"  means all machinery,  equipment,  furniture,  fixtures and
         other  tangible  personal  property of Borrower  not  considered  to be
         "Receivables",  "Inventory",  or "General Intangibles",  as those terms
         are  defined  herein,  now owned or  hereafter  acquired  by  Borrower,
         together  with  all  accessions   thereto  and  all  substitutions  and
         replacements thereof and parts therefor; all cash or non-cash proceeds;
         and including, without limitation, all Equipment listed on any schedule
         attached hereto.



                                      - 1 -

<PAGE>



         "General  Intangibles"  means  all  other  intangible  or  intellectual
         personal  assets of  Borrower  not  covered  within the  definition  of
         "Receivables",  "Inventory" and "Equipment" above, whether now owned or
         hereafter  acquired,  including  but not limited to goodwill,  patents,
         trademarks,  copyrights,  and all rights under any  application for any
         patent, copyright or trademark.

         "Inventory"  means all goods,  merchandise and other personal  property
         now owned or hereafter  acquired by Borrower which are held for sale or
         lease,  or are  furnished or are to be furnished  under any contract of
         service, or are raw materials,  work-in process, supplies,  components,
         or materials used or consumed in Borrower's business,  and all products
         thereof, and all substitutions,  replacements,  additions or accessions
         therefor  and  thereto;  all cash or  non-cash  proceeds  of all of the
         foregoing, including insurance proceeds.

         "Obligations" shall mean Borrower's  obligations to pay and perform the
         obligations set forth in Section 3.

         "Receivables" means, whether now in existence or hereafter arising, all
         accounts,  contract  rights,  instruments,  documents,  chattel  paper,
         general intangibles (including,  without limitation, chooses in action,
         tax  refunds,  and  insurance  proceeds);   any  other  obligations  or
         indebtedness owed to Borrower from whatever source arising;  all rights
         of Borrower to receive any payments in money or kind; all guarantees of
         Receivables and security therefor; all cash or non-cash proceeds of all
         of the foregoing;  all of the right,  title and interest of Borrower in
         and with respect to the goods,  services or other  property  which gave
         rise to or which secure any of the Receivables  and insurance  policies
         or other property relating  thereto,  and all of the rights of Borrower
         as  an  unpaid  seller  of  goods  or  services,   including,   without
         limitation,  the rights of stoppage in transit,  replevin,  reclamation
         and resale;  and all of the foregoing whether now existing or hereafter
         created or acquired.

         "Subordination  Agreement" means that certain  Subordination  Agreement
         between NationsBank, Secured Party and Borrower dated as of 16 October,
         1997 and all such other  agreements  as Secured  Party is  required  to
         execute  pursuant  to the Asset  Purchase  Agreement  to effect  and/or
         evidence  the  subordination  of the  Obligations  to other  lenders of
         Borrower.

         To the extent not defined in this Section, unless the context otherwise
         requires,  all other terms  contained in this Agreement  shall have the
         meanings attributed to them by Article 9 of the Uniform Commercial Code
         as in force  on the date of this  Security  Agreement  in the  State in
         which the  Collateral  is  located,  to the extent the same are used or
         defined therein.

2.       GRANT OF SECURITY INTEREST

         To secure the payment and performance of the Obligations and subject to
         the  applicable  terms of this  Agreement,  Borrower  hereby  grants to
         Secured Party a continuing security


                                      - 2 -

<PAGE>



         interest in the Collateral as defined in Section 4 hereof,  whether now
         owned or hereafter acquired.  Borrower agrees to execute all additional
         documents,  instruments,  and agreements and take all additional  steps
         necessary or desirable to ensure that Secured  Party shall at all times
         have a perfected  lien on all of the  Collateral.  Notwithstanding  any
         other  provision  of  this  Security  Agreement  to the  contrary,  all
         Obligations  of Borrower  under this Security  Agreement (as defined in
         the Subordination Agreement) are subordinated to the Senior Obligations
         (as  defined in the  Subordination  Agreement)  and are  subject to the
         provisions   of  the   Subordination   Agreement.   In  addition,   and
         notwithstanding  any provision of this  Agreement to the contrary,  the
         security  interest  granted to the  Secured  Party  hereunder  shall be
         subordinate in all respects to (i) all liens and encumbrances  relating
         to any Senior  Financing (as defined in the Asset  Purchase  Agreement)
         and (ii) all such other liens and  encumbrances  which are contested by
         the Buyer in good faith.  The Buyer shall provide written notice to the
         Seller itemizing all liens and  encumbrances  which it contests in good
         faith.  Within 60 days after the date  hereof,  the Buyer shall  either
         remove or  subordinate to the security  interest  granted to the Seller
         under this  Agreement  all liens and  encumbrances  on its assets other
         than those referred to in (i) or (ii) of the preceeding sentence or pay
         the balance then due on the Note.

3.       THE OBLIGATIONS

         The term  "Obligations" as used in this Agreement shall mean Borrower's
         liabilities, obligations and indebtedness of any kind, heretofore, now,
         or hereafter  owing,  arising,  due or payable  under the Note and this
         Security  Agreement;   and  Borrower's  liabilities,   obligations  and
         indebtedness of any kind, heretofore, now, or hereafter owing, arising,
         due or payable under this Security Agreement.

4.       THE COLLATERAL

         Except as otherwise set forth in this Agreement,  the security interest
         is granted in the following (referred to herein as the "Collateral"):

                  [X]      Receivables

                  [X]      Inventory

                  [X]      Equipment

                  [X]      General Intangibles

         All  ledger  sheets,   files,   records,   documents  and   instruments
         (including,  without limitation,  computer programs,  tapes and related
         electronic  data  processing  software)  evidencing  an  interest in or
         relating to the Collateral; and



                                      - 3 -

<PAGE>



         All instruments, documents, securities, cash, property and the proceeds
         of any of the foregoing,  owned by Borrower or in which Borrower has an
         interest,  which  now or  hereafter  are at any time in  possession  or
         control  of  Secured  Party,  in  transit by mail or carrier to or from
         Secured Party or in the  possession of any third party acting on behalf
         of Secured  Party.  Notwithstanding  any provision of this Agreement to
         the contrary,  the  Collateral  shall not include any property or other
         interests of Borrower,  in which a security interest can not, by virtue
         of any agreement under which it is held, be granted to Secured Party as
         contemplated by this Agreement.

5.       GENERAL REPRESENTATIONS, WARRANTIES AND COVENANTS

         Borrower   represents   and   warrants  to  Secured   Party  (and  such
         representations  and  warranties  shall  be  continuing  so long as any
         Obligations shall remain outstanding), as follows:

         Borrower has been duly  organized  and is validly  existing and in good
         standing  under the laws of the  Commonwealth  of Virginia  and is duly
         qualified   and  in  good  standing  to  do  business  in  those  other
         jurisdictions  where  it does  business;  Borrower  has the  power  and
         authority  to own the  Collateral,  to  enter  into  and  perform  this
         Agreement and any other document or instrument  delivered in connection
         herewith,  and to incur or secure the  Obligations;  and this Agreement
         and all other  related  documents  and  instruments  constitute  valid,
         binding obligations of Borrower and are enforceable against Borrower in
         accordance with their terms; and

         Borrower   shall   promptly   execute  and  deliver  all   assignments,
         certificates of title,  conveyances,  assignment  statements,  security
         agreements,  financing statements,  continuation statements,  and other
         agreements, instruments and documents as may be reasonably requested by
         Secured  Party  at any  time  to  perfect  and  maintain  the  security
         interests and liens granted herein by Borrower; and

         Borrower shall pay promptly,  when due, all taxes  (including,  without
         limitation,   all  sales,  use,  excise,  personal  property,   income,
         withholding and corporate franchise taxes),  assessments,  governmental
         charges,  claims for labor,  supplies,  rent and any other  obligations
         which,  if unpaid,  might  become a lien  against  any of its  property
         except  liens for taxes not yet due and payable and  liabilities  being
         contested  in good faith and with due  diligence by Borrower and except
         for  liabilities  the amount of which or the contest thereof do not, in
         Security Party's sole discretion, adversely affect Borrower's financial
         condition, ability to repay the Obligations, the security interests and
         liens  of  Secured  Party in the  Collateral  or the  priority  of such
         security  interests and liens; and Borrower shall not permit, or suffer
         to remain, and will promptly discharge, any lien against the Collateral
         arising from any unpaid tax,  assessment,  levy or governmental  charge
         unless  Borrower  contests  such lien or liens in good faith,  provides
         Secured Party with all facts  concerning the lien, and provides Secured
         Party,  at Secured Party's  request,  with a reasonable bond to protect
         against such loss; and



                                      - 4 -

<PAGE>



         In the event Borrower shall fail to pay any such tax, assessment,  levy
         or governmental charge or to discharge any such lien or contest same in
         good faith,  then  Secured  Party,  without  waiving or  releasing  any
         obligation or default of Borrower  hereunder,  may at any time or times
         hereafter make such payment, settlement, compromise or release or cause
         to be released  any such lien,  and take any other  action with respect
         thereto which Secured Party deems  advisable.  All sums paid by Secured
         Party in satisfaction  of, or on account of any tax, levy or assessment
         or  governmental  charge,  or to discharge or release any lien, and any
         expenses,  including reasonable  attorneys' fees, court costs and other
         charges  relating  thereto,  shall  become  a part of the  Obligations,
         payable on demand.

         Borrower  agrees to deliver to Secured  Party  within 30 days after the
         end of each  quarter  and within 45 days  after the end of each  fiscal
         year  unaudited  consolidated  financial  statements  of the  Borrower.
         Secured  Party agrees to treat such  financial  statements  as strictly
         confidential.

         Borrower  agrees,  upon written  request of Secured  Party,  to furnish
         Security Party with copies of certificates of insurance with respect to
         such insurance as Borrower may maintain on the Collateral.

6.       EVENTS OF DEFAULT

         The  occurrence  of any  one or  more  of the  following  events  shall
         constitute an "Event of Default" hereunder:

         a.       Default in  the payment  of any  principal,  interest or other
                  charges  with  respect  to any of the Obligations  as and when
                  due;

         b.       Default in the  observance or  performance  of any covenant or
                  agreement  of  Borrower  set  forth  in the Note or any of the
                  Collateral  Documents,  including the Asset Purchase Agreement
                  or in any agreement,  note, or instrument  heretofore,  now or
                  hereafter  executed by Borrower in favor of Secured  Party and
                  such default is not cured within 30 days after notice  thereof
                  is given to Borrower by Secured Party; or

         c.       Borrower's  insolvency,   business  failure,  dissolution,  or
                  assignment  for  the  benefit  of  creditors,  the  filing  by
                  Borrower of any petition in bankruptcy  or for  reorganization
                  for  receivership  or to  effect  a plan or  arrangement  with
                  creditors,  or any such filing is made against Borrower and is
                  not vacated within forty-five (45) days of commencement.

7.       ACCELERATION

         If any Event of Default  shall  occur,  then or at any time  thereafter
         while such Event of Default shall continue,  Secured Party by notice to
         Borrower, may declare all Obligations to be


                                      - 5 -

<PAGE>



         immediately due and payable,  without  protest,  presentment or further
         notice, all of which are expressly waived by Borrower. If such an Event
         of Default  shall  occur,  Secured  Party also may  exercise any rights
         granted in the Note or the Security Agreement.

8.       RIGHTS AND REMEDIES

         Upon the  occurrence of an Event of Default,  the Security  Party shall
         have all rights and  remedies  of a secured  party  under the  Virginia
         Uniform Commercial Code.

9.       GENERAL PROVISIONS

         a.       The failure of Secured Party at any time or times hereafter to
                  require   strict  performance  by  Borrower  of  any  of  the
                  provisions, warranties, terms and conditions contained in the
                  Note,  this Agreement, the Security Agreement or in any other
                  agreement,  guaranty, note, instrument or document  now or at
                  any time or times hereafter executed by Borrower and delivered
                  to Secured Party shall not waive, affect or diminish any right
                  of  Secured Party at any time  or times  thereafter to demand
                  strict  performance thereof; and, no rights of  Secured Party
                  hereunder  shall be deemed  to have been waived by any act or
                  knowledge of Secured Party, its agents, officers or employees,
                  unless such  waiver is contained  in an instrument in writing
                  signed by an officer of Secured Party and directed to Borrower
                  specifying such waiver.  No waiver by Secured Party of any of
                  its  rights  shall operate  as a waiver of  any other of  its
                  rights or any of its rights on a future occasion.

         b.       Any  demand  or  notice  required  or  permitted  to be  given
                  hereunder   shall  be  deemed   delivered  when  deposited  in
                  certified or registered  United States Mail,  postage prepaid,
                  to the other party at its address first set forth above, or at
                  such other  address as the other party may direct from time to
                  time in writing.

         c.       Wherever possible, each  provision of  this Agreement shall be
                  interpreted in such manner  as to be effective and valid under
                  applicable  law; should  any  portion  of  this  Agreement  be
                  declared  invalid  for  any reason  in any  jurisdiction, such
                  declaration  shall have no  effect upon the remaining portions
                  of this Agreement. Furthermore, the entirety of this Agreement
                  shall   continue  in  full  force  and  effect  in  all  other
                  jurisdictions  and  said  remaining portions of this Agreement
                  shall  continue  in  full  force  and  effect in  the  subject
                  jurisdiction  as  if this Agreement had been executed with the
                  invalid portions thereof deleted.

         d.       The  provisions  of this  Agreement  shall be binding upon and
                  shall  inure  to the  benefit  of the  heirs,  administrators,
                  successors   and  assigns  of  Secured   Party  and  Borrower;
                  provided,  however,  Borrower may not assign any of its rights
                  or delegate any of its obligations hereunder without the prior
                  written consent of Secured Party.



                                      - 6 -

<PAGE>



         e.       If at any time or times hereafter, Secured Party shall employ
                  counsel in  connection with the execution and consummation of
                  the   transactions  contemplated  by  this  Agreement  or  to
                  commence,  defend  or intervene,  file a petition, complaint,
                  answer, motion or other pleading, or to take any action in or
                  with  respect  to  any  suit  or  proceeding  (bankruptcy  or
                  otherwise)  relating to this Agreement, the Collateral or any
                  other  agreement,  guaranty,  note,  instrument  or  document
                  heretofore, now or at any time or times hereafter executed by
                  Borrower  and  delivered  to  Secured Party,  or  to  protect
                  collect,  lease, sell, take possession of or liquidate any of
                  the Collateral, or to attempt to enforce any security interest
                  in any of the Collateral, or to enforce any rights of Secured
                  Party hereunder whether before or after the occurrence of any
                  Event of Default, or  to collect any of the Obligations, then
                  in any  of such events, all of the reasonable attorneys' fees
                  arising  from  such  services,  and  any  expenses, costs and
                  charges  relating  thereto,  shall be part of the Obligations,
                  payable  on  demand  and secured by the Collateral, including
                  fees  and costs relating to the filing of financing statements
                  to  the  extent  such  filings  are  reasonably  required   in
                  connection with this Agreement.

         f.       This Agreement may be executed in any number of counterparts,
                  each  of which shall be  deemed to be an original, but all of
                  which  together   shall  constitute  but  one  and  the  same
                  instrument.

         g.       Each  reference  herein to  Secured  Party  shall be deemed to
                  include its  successors  and  assigns,  and each  reference to
                  Borrower  and any  pronouns  referring  thereto as used herein
                  shall  be  construed  in  the  masculine,   feminine,  neuter,
                  singular or plural,  as the context may require,  and shall be
                  deemed to include the legal  representatives,  successors  and
                  assigns  of  Borrower,  all of  whom  shall  be  bound  by the
                  provisions  hereof.  Headings  are  used  for  convenience  of
                  reference  only and shall not be used to interpret,  define or
                  limit the provisions hereof.

         h.       Time is of the essence in this Agreement.  Borrower shall at
                  all times promptly pay and perform all Obligations.

10.      GOVERNING LAW; JURISDICTION AND VENUE

         THIS  SECURITY   AGREEMENT  SHALL  BE  GOVERNED  BY  AND  CONSTRUED  IN
         ACCORDANCE  WITH THE  LAWS OF THE  STATE IN  WHICH  THE  COLLATERAL  IS
         LOCATED.  IN ANY  LITIGATION  IN  CONNECTION  WITH OR TO  ENFORCE  THIS
         SECURITY  AGREEMENT,  BORROWER HEREBY IRREVOCABLY  CONSENTS AND CONFERS
         PERSONAL  JURISDICTION  ON THE STATE  COURTS OF THE COUNTY IN WHICH THE
         COLLATERAL IS LOCATED,  OR ON THE UNITED STATES  DISTRICT  COURT OR THE
         UNITED STATES BANKRUPTCY COURT FOR THE DISTRICT IN WHICH THE COLLATERAL
         IS LOCATED. BORROWER EXPRESSLY WAIVES ANY OBJECTIONS AS TO VENUE IN ANY
         SUCH COURTS AND AGREES


                                      - 7 -

<PAGE>



         THAT  SERVICE OR PROCESS  MAY BE MADE ON  BORROWER BY MAILING A COPY OF
         THE SUMMONS AND  COMPLAINT  BY  REGISTERED  OR CERTIFIED  MAIL,  RETURN
         RECEIPT  REQUESTED,  TO BORROWER'S  ADDRESS.  NOTHING  CONTAINED HEREIN
         SHALL,  HOWEVER,  PREVENT  SECURED  PARTY FROM  BRINGING  ANY ACTION OR
         EXERCISING  ANY RIGHTS WITHIN ANY OTHER STATE OR  JURISDICTION  OR FROM
         OBTAINING  PERSONAL  JURISDICTION  BY  ANY  OTHER  MEANS  AVAILABLE  BY
         APPLICABLE LAW.

         ALL WAIVERS SET FORTH IN THIS SECURITY AGREEMENT ARE MATERIAL
         INDUCEMENTS FOR SECURED PARTY TO ACCEPT THIS SECURITY
         AGREEMENT.

                                      (End)



                                      - 8 -

<PAGE>



         IN WITNESS WHEREOF, the undersigned have caused this Security Agreement
to be executed effective as of the date first written above.



BORROWER:                               ATTEST:

STAR MOUNTAIN, INC.

         \Timothy Schimkus\                      \Irene M. Byrne\
By:      ____________________________   By:      _____________________________
         Timothy Schimkus                        Irene M. Byrne
         Treasurer                               Secretary

SECURED PARTY:                          ATTEST:

ESSEX CORPORATION

         \Harry Letaw, Jr.\                      \Kimberly DeChello\
By:      ____________________________   By:      _____________________________
         Harry Letaw, Jr.                        Kimberly DeChello
         Chief Executive Officer                 Assistant Secretary




                                      - 9 -

<PAGE>

                                    EXHIBIT G

                                     FORM OF

                             SUBORDINATION AGREEMENT


(The Registrant  hereby agrees to furnish  supplementally  to the Securities and
 Exchange Commission or other party upon request a paper copy of Exhibit G.)

<PAGE>

                                    EXHIBIT H

                       CERTIFICATION OF NON-FOREIGN STATUS


         Section  1445 of the  Internal  Revenue  Code of 1986  provides  that a
transferee of a U.S. real property  interest must withhold tax if the transferor
is a foreign  person.  To inform the transferee  that  withholding of tax is not
required  upon  the  disposition  of a U.S.  real  property  interest  by  ESSEX
CORPORATION,  a Virginia corporation (the "Transferor"),  the undersigned hereby
certifies  to  transferee,  STAR  MOUNTAIN,  INC.,  a Virginia  corporation,  as
follows:

         1.       Transferor is not a nonresident alien individual, foreign
                  corporation, foreign partnership, foreign trust, or foreign
                  estate (as those terms are defined in the Internal Revenue
                  Code and Income Tax Regulations);

         2.       Transferor's U.S. tax identification number is 54-0846569; and

         3.       Transferor's address is

                           Essex Corporation.
                           9150 Guilford Road
                          Columbia, Maryland 21046-1891

         Transferor  understands that this certification may be disclosed to the
Internal  Revenue  Service by Star Mountain,  Inc. and that any false  statement
contained herein could be punished by fine, imprisonment, or both.

                                      (End)



                                      - 1 -

<PAGE>



         Under  penalties  of  perjury,  I  declare  that I have  examined  this
certification  and to the best of my knowledge  and belief it is true,  correct,
and complete.



Date: 16th day of October, 1997        ESSEX CORPORATION
                                       TRANSFEROR

                                       \Harry Letaw, Jr.\
                                   By: ____________________________
                                       Harry Letaw, Jr.
                                       Chief Executive Officer



                                      - 2 -

<PAGE>


                                                      ASSET PURCHASE AGREEMENT
                                                                 16 OCTOBER 1997
                                 SCHEDULE 1.1.2

                                 EXCLUDED ASSETS


         1.       Licenses and software known as Deltek.

         2.       Licenses and software known as Novell.

         3.       List  of  Contracts  and  related  receivables  and  proceeds
                  therefrom  per  attached  as  "Contracts Listing - Assets Not
                  Transferred".

         4.       Cash on hand.

         5.       Pre-paid equipment  repairs for printers and broken equipment
                  shipped by UPS.



<PAGE>
SYSTEMS EFFECTIVENESS DIVISION                                       06-Oct-97
CONTRACT LISTING - ASSETS NOT TRANSFERRED


DELTEK    CONTRACT
NO.       NO.                             CUSTOMER
- --------------------------------------------------------------------------------
1015   PO 440191                          VAIL/NAVSEA
1023   PO 440351                          VAIL/NAVSEA
1024   PO 440371                          VAIL/NAVSEA
1025   N00024-89-4015                     VAIL/NAVSEA
1032   A1009-007/50696-A                  VAIL/NAVSEA
1035   16R01-SC-064-50939                 RSG/NAVSEA
1036   N00102-91-C-0460                   SUBMEPP/PORTSMOUTH NAVAL SHIPPING
1038   CIT#ETH-100-02                     CTI/SMMSO
1039   CIT#ETH-100-02                     CTI/SMMSO
1040   N00102-91-C-0460                   SUBMEPP/PORTSMOUTH NAVAL SHIPPING
1880   N00024-86-C-2135                   SMMSO/BRIDGE FY 87
2251   1703C2383                          ADTECH/OTEA
2255   DTFH61-89-C-00096                  FEDERAL HIGHWAY ADMINISTRATION
2270   00794-002                          PRC/AFOTEC
2272   DA005-90-D-0023                    US ARMY AVIATION/HFE
2280   DAAL03-86-D-0001                   NTSC VIA BATTELLE
2281   00639-SC-002                       PRC INC
2309   LTR 17JAN92 (DTFJ61-90-C-0071)     TRI/FHWA
2312   OPM 91-2975                        PMO/HDL
2314   16R01-SC-064/5E168                 RSG
2318   N00102-91-C-0460                   SUBMEPP/PORTSMOUTH NAVAL SHIPPING
2319   15-930053-78                       SAIC/ARMY
2322   91-SC-181/ETH-300                  CTI
2325   PO SNC196-064                      GENERAL DYNAMICS
2339   N62269-93-C-0217                   NAVAL AIR WARFARE
2342   N00019-92-C-0157                   NAVAIR WASHINGTON
2343   N00102-91-C-0460                   SUBMEPP/PORTSMOUTH NAVAL SHIPPING
2350   F41624-93-C-3003                   BROOKS AFB, TEXAS
2355   91-SC-181/ETH-300                  CTI
2356   PO SNC196-064                      GENERAL DYNAMICS
2357   T8200-3-3531/01-XS                 TRANSPORT CANADA
2358   16R01-SC-064/TI4GO                 RSG/NAVSEA (SPCC)
2360   TCN/94004-DOO 1086                 BATELLE
2363   16R01-SC-064/TI4GO                 RSG/SMMSO
2365   NAS9-19107                         NASA
2366   NAS9-19106                         NASA, HOUSTON, TX
2368   N00102-91-C-0460                   SUBMEPP/PORTSMOUTH NAVAL SHIPPING
2369   N39998-94-C-2241                   OFFICE OF SPECIAL TECHNOLOGY
2370   16R01-SC-064/TI4GO                 RSG/US COAST GUARD


<PAGE>
SYSTEMS EFFECTIVENESS DIVISION                                       06-Oct-97
CONTRACT LISTING - ASSETS NOT TRANSFERRED


DELTEK    CONTRACT
NO.       NO.                             CUSTOMER
- --------------------------------------------------------------------------------
2371   16R01-SC-064/TI4GO                 RSG/NAVSEA
2374   16R01-SC-064/TI4GO                 RSG/NAVSEA
2378   PO SNC196-064                      GENERAL DYNAMICS
2379   16R01-SC-064/TI4GO                 RSG/NAVSEA
2400   N39998-95-C-5334                   OFFICE OF SPECIAL TECHNOLOGY
2412   DAAB12-96-C-0012                   FT BELVOIR
2414   N00014-96-C-0308                   OFFICE OF NAVAL RESEARCH
2415   N00014-96-C-0309                   OFFICE OF NAVAL RESEARCH
2416   PO 12552                           CAMBER CORPORATION
2417   DAAB07-97-C-0011                   TACOM
2419   DAAB07-97-P-6012                   USA CECOM ACQ CENTER
2422   DAAB07-97-V-6022                   CECOM/FT BELVOIR
2423   DAAB07-97-V-6022                   CECOM/FT BELVOIR
2425   DAAB07-97-D-6083                   CECOM/FT BELVOIR
2906   OPM-97-0075                        PMO JOINT VENTURE
3130   N00024-88-C-2122                   NAVSEA/SMMSCO
3500   HJF-91-SC-003                      HJF/DOE OFFICE
3501   HJF-91-SC-003                      HJF/DOE OFFICE
4801   89TSGSB50-02                       TSG/NAVAIR
4802   89TSGSB50-02                       TSG/NAVAIR
4803   89TSGSB50-02                       TSG/NAVAIR
4804   89TSGSB50-02                       TSG/NAVAIR
4805   89TSGSB50-02                       TSG/NAVAIR
4806   89TSGSB50-02                       TSG/NAVAIR
4807   89TSGSB50-02                       TSG/NAVAIR
5216   N62269-88-D-0109                   NADC
5221   N62269-88-D-0109                   NADC
5222   N62269-88-D-0109                   NADC
5223   N62269-88-D-0109                   NADC

<PAGE>


                                                       ASSET PURCHASE AGREEMENT
                                                                 16 OCTOBER 1997

                                  SCHEDULE 1.2

                            ESCROW DRAWDOWN SCHEDULE


         1.       Contract No. DAAD05-93-D-7022, dated April 1, 1993, issued by
                  the Directorate of Contracting,  USAAPGSA, Ryan Building, APG,
                  Maryland   21005-5001,  to Essex Corporation,  1430 Springhill
                  Road, Suite 510, McLean, Virginia 22102.

                  Value Assigned: If novated: $75,000
                                  If not novated and not deemed
                                novated: $56,250

         2.       Contract No. DAAB07-97-C-6013, dated March 14, 1997, issued by
                  USA CECOM ACQ CTR,  Washington  OPS  Office,  2461  Eisenhower
                  Avenue (AMSEL-AC-WB- B), Alexandria,  Virginia 22331-0700,  to
                  Essex  Corporation,  1430 Springhill  Road, Suite 510, McLean,
                  Virginia 22102.

                  Value Assigned: $55,000

         3.       Subcontract No. 116054-24195, dated  February 11, 1997, issued
                  by Fibertek, Inc. ESS, 510 Herndon  Parkway, Herndon, Virginia
                  22070, to Essex  Corporation,  Systems Effectiveness Division,
                  1430  Springhill  Road,  Suite  510,  McLean,  Virginia  22102
                  together  with  2 delivery orders related thereto [novation or
                  deemed novation  to occur once  subcontract and  both delivery
                  orders are novated or deemed novated].

                  Value Assigned: $55,000

         4.       Contract No.  NAS9-97022,  dated  December 2, 1996,  issued by
                  NASA Johnson Space Center, S&LS Acquisition  Management,  2101
                  NASA Road 1, Houston, Texas 77058-3698,  to Essex Corporation,
                  1430 Springhill Road, Suite 510, McLean, Virginia 22102.

                  Value Assigned: If novated: $50,000
                                  If not novated and not deemed
                                novated: $37,500



                                      - 1 -

<PAGE>


                                                       ASSET PURCHASE AGREEMENT
                                                                 16 OCTOBER 1997

         5.       Contract  No. DE-AC04-93AL91124,  dated  September  15, 1993,
                  issued  by the  Department of  Energy, Albuquerque Operations
                  Office, P.O. Box 5400, Albuquerque, New Mexico 87185-5400, to
                  Essex Corporation, 1430  Springhill Road,  Suite 510, McLean,
                  Virginia, 22102.

                  Value Assigned: If novated: $350,000
                                  If not novated and not deemed
                                novated: $262,500

         6.       Contract No. - Grant No. 1 R43 AA11608-01 dated September 22,
                  1997 issued  by National Institutes of Health, 6000 Executive
                  Blvd.,  Rockville,  MD 20892-7003 to  Essex Corporation, 1040
                  Woodcock Road, Suite 227, Orlando, FL 32803.

                  Value Assigned: $10,000.

         7.       Contract No. - Grant No.  1 R43 AG14316-01 dated September 30,
                  1997 issued  by National Institutes  of Health, 6000 Executive
                  Blvd.,  Rockville,  MD 20892-7003  to  Essex Corporation, 1040
                  Woodcock Road, Suite 227, Orlando, FL 32803.

                  Value Assigned: $10,000.

         8.       Contract No. USZA92-97-C-0055 dated  September 16, 1997 issued
                  by the HQ, US Army Special  Operations Command, Ft. Bragg, NC
                  28307-5200 to Essex  Corporation, 1430 Springhill Road, Suite
                  510, McLean, VA 22102.

                  Value Assigned: $10,000.

         9.       Contract No. N39998-97-M-5542 dated September 10, 1997 issued
                  by Dept. Of Defense, Office of Special Technology, 10530
                  Riverview Road, Building 3, Ft. Washington, MD 20744 to Essex
                  Corporation,1430 Springhill Road, Suite 510, McLean, VA 22102.

                  Value Assigned: $10,000.


                                      - 2 -

<PAGE>


                                                       ASSET PURCHASE AGREEMENT
                                                                 16 OCTOBER 1997

                                  SCHEDULE 1.3

                               ASSUMED LIABILITIES

1.       CONTRACTS

         1.1      Contract No. DAAD05-93-D-7022,  dated April 1, 1993, issued by
                  the Directorate of Contracting,  USAAPGSA, Ryan Building, APG,
                  Maryland  21005-5001,  to Essex  Corporation,  1430 Springhill
                  Road, Suite 510, McLean, Virginia 22102.

         1.2      Contract No. DAAB07-97-C-6013, dated March 14, 1997, issued by
                  USA CECOM ACQ CTR,  Washington  OPS  Office,  2461  Eisenhower
                  Avenue (AMSEL-AC-WB- B), Alexandria,  Virginia 22331-0700,  to
                  Essex  Corporation,  1430 Springhill  Road, Suite 510, McLean,
                  Virginia 22102.

         1.3      Subcontract No.  116054-24195, dated February 11, 1997, issued
                  by Fibertek,  Inc. ESS, 510 Herndon Parkway, Herndon, Virginia
                  22070, to  Essex Corporation,  Systems Effectiveness Division,
                  1430  Springhill  Road,  Suite  510,  McLean,  Virginia  22102
                  (attached) -- including Delivery Order DAAB07-96-D-H753.

         1.4      Contract No.  NAS9-97022,  dated  December 2, 1996,  issued by
                  NASA Johnson Space Center, S&LS Acquisition  Management,  2101
                  NASA Road 1, Houston, Texas 77058-3698,  to Essex Corporation,
                  1430 Springhill Road, Suite 510, McLean, Virginia 22102.

         1.5      Contract  No.  DE-AC04-93AL91124,  dated  September  15, 1993,
                  issued  by  the  Department of  Energy, Albuquerque Operations
                  Office, P.O. Box 5400, Albuquerque,  New Mexico 87185-5400, to
                  Essex  Corporation,  1430  Springhill Road, Suite 510, McLean,
                  Virginia 22102.

         1.6      Grant No. 1 R43 AA11608-01  dated September 22, 1997 issued by
                  National   Institutes  of  Health,   6000   Executive   Blvd.,
                  Rockville,  MD 20892-7003 to Essex Corporation,  1040 Woodcock
                  Road, Suite 227, Orlando, FL 32803.

         1.7      Grant No. 1 R43 AG14316-01  dated September 30, 1997 issued by
                  National   Institutes  of  Health,   6000   Executive   Blvd.,
                  Rockville,  MD 20892-7003 to Essex Corporation,  1040 Woodcock
                  Road, Suite 227, Orlando, FL 32803.

         1.8      Contract No.  USZA92-97-C-0055 dated September 16, 1997 issued
                  by the HQ, US Army Special Operations  Command,  Ft. Bragg, NC
                  28307-5200 to Essex  Corporation,  1430 Springhill Road, Suite
                  510, McLean, VA 22102.


                                      - 1 -

<PAGE>


                                                       ASSET PURCHASE AGREEMENT
                                                                 16 OCTOBER 1997


         1.9      Contract No. N39998-97-M-5542 dated September 10, 1997 issued
                  by Dept.   Of  Defense,  Office  of Special Technology, 10530
                  Riverview Road, Building 3, Ft. Washington, MD 20744 to Essex
                  Corporation, 1430 Springhill Road, Suite 510,McLean, VA 22102.

         1.10     Agreement for Consulting Services, dated June 7, 1993, between
                  Edward H.Frederick, Jr., and Essex Corporation.

         1.11     Agreement  for  Consulting  Services,  dated  March  11, 1997,
                  between  Stephen  A.  Povah  and  Essex  Corporation.

         1.12     Subcontract  No.  2418A, dated December 16, 1996, between the
                  University of Central Florida and Essex Corporation.

         1.13     Subcontract  No. 2420-01, dated March 21, 1997, between James
                  Madison University and Essex Corporation.

         1.14     Subcontract  No. 2418B, dated December 16, 1996, between Jones
                  and Jones Research Associates and Essex Corporation.

2.       FACILITY LEASES

         2.1      Lease,  dated  October  1, 1986,  between  Freida V. Bruer and
                  Essex Corporation,  a Virginia corporation,  for one 14' x 70'
                  mobile office unit.

         2.2      Lease,  dated  December 8, 1994,  between TDP  Corporation,  a
                  Virginia  corporation,   and  Essex  Corporation,  a  Virginia
                  corporation,  for the premises  identified as Suite 510 of the
                  building  located at 1430 Springhill  Road,  McLean  Virginia,
                  commonly known as Tysons Dulles Plaza II.

         2.3      Lease,  dated April 1, 1997,  between  Koger  Equity,  Inc., a
                  Florida  corporation,   and  Essex  Corporation,   a  Virginia
                  corporation,  for the premises  identified as Suite 227 of the
                  building  located  at 1040  Woodcock  Road,  Orlando  Florida,
                  commonly known as Palmetto.

3.       CAPITAL EQUIPMENT LEASES

         3.1      Equipment Lease Agreement No. 493167, dated October 12, 1995,
                  between AT&T Capital Leasing Services and Essex Corporation.*


                                      - 2 -

<PAGE>


                                                       ASSET PURCHASE AGREEMENT
                                                                 16 OCTOBER 1997


         3.2      Lease No. 118147001, dated October 10, 1995, between Potomac
                  Funding & Leasing Association and Essex Corporation.*

         3.3      Equipment  Lease  dated  October  26,  1995,  between  Copelco
                  Capital,  Inc.,  P.O. Box 728, Park Ridge,  NJ 07656-0728  and
                  Essex Corporation (Minolta copier rental).

         3.4      Equipment  Lease dated December 12, 1996,  between AT&T Credit
                  Corp.,   P.O.  Box  849,   Parsippany,   NJ  07054  and  Essex
                  Corporation (telephone system lease).

         3.5      Equipment  Lease  between  Minolta  Leasing Services (Chemical
                  Leasing),  P.O. Box  105819,  Atlanta, GA 30348-5819 and Essex
                  Corporation (Orlando copier lease).

         3.6      Equipment Lease dated December 9,  1996,  between Nissan Motor
                  Acceptance Corp.,  P.O. Box 105810, Atlanta, GA 30348-5810 and
                  Essex Corporation (truck lease).

         3.7      Equipment  Lease between  Pitney Bowes,  8875 Dex Ellis Trail,
                  #501,  Jacksonville,   FL  32256-1221  and  Essex  Corporation
                  (postage meter rental, model 0015743, serial no. 0001632762).

         * The parties  acknowledge that those certain capital  equipment leases
         numbered 3.1 and 3.2 are in the process of being  assigned and that the
         Seller, with the cooperation of the Buyer, will use its best efforts to
         effect such assignment as soon as possible (the Buyer being entitled to
         the use of the subject  equipment until and after the effective date of
         such assignments).

4.       ACCRUED VACATION, LEASE MAINTENANCE AGREEMENTS AND ACCOUNTS PAYABLE

         4.1      Accrued Vacation

                  Accrued vacation not to exceed $66,825.

         4.2      Accounts payable  which  relate directly to the Business in a
                  total amount not to exceed $152,170.

         4.3      Additional Materials and Miscellaneous Overhead/Indirect Items

                  4.3.1      All of the items listed in the  Sections  4.3.2 and
                             4.3.3 are to be  assumed  by the Buyer  only to the
                             extent same were properly  incurred with  reference
                             to, and are recoverable by the Buyer under,  one of
                             the contracts  listed in Section 1 to this Schedule
                             1.3, the assumption by the Buyer to be effective


                                      - 3 -

<PAGE>


                                                       ASSET PURCHASE AGREEMENT
                                                                 16 OCTOBER 1997

                             only when and if the contract with respect to which
                             the amount is so incurred (and under which it is so
                             recoverable)    has   been    novated    or   fully
                             subcontracted   in  the   name  of  the   Buyer  in
                             accordance with Section 1.1.4 of this Agreement.

                  4.3.2      Additional  materials  (direct costs), in an amount
                             not to exceed $150,000,  and travel (direct costs),
                             in an amount not to exceed  $25,000,  to the extent
                             any of the foregoing were properly  incurred by the
                             Seller  pursuant  to one or more of the  government
                             contracts being assigned/novated to the Buyer under
                             this Asset Purchase Agreement.

                  4.3.3      Miscellaneous  overhead/indirect items for which no
                             invoice(s)  have been received will be allocated to
                             each of the  Seller  and Buyer on a pro rata  basis
                             according  to  which  party  benefitted;  provided,
                             however,  that in no event shall Seller's liability
                             exceed  $25,000  for  the  foregoing  miscellaneous
                             overhead/indirect  expenses,  to the  extent any of
                             the foregoing were properly  incurred by the Seller
                             pursuant to one or more of the government contracts
                             being  assigned/novated  to the  Buyer  under  this
                             Asset Purchase Agreement.

5.       LEASE MAINTENANCE AGREEMENTS

         5.1      Maintenance  Agreement  dated  March 31,  1997,  between  Avid
                  Technology,  Inc.,  P.O. Box 3197,  Boston,  MA 02241-3197 and
                  Essex Corporation (video lab maintenance).

         5.2      Maintenance  Agreement  dated  October 26, 1995,  between Gold
                  Office Products,  14620 Rothgeb Drive, Rockville, MD 20850 and
                  Essex Corporation (Minolta copier maintenance agreement).

         5.3      Maintenance  Agreement dated December 12,  1996, between AT&T,
                  5450 N.W. 33rd Avenue, Suite 106, Ft. Lauderdale, FL 33309 and
                  Essex Corporation (post warranty
                  maintenance).

         5.4      Maintenance  Agreement  5320-3128468,  dated January 14, 1997,
                  between  Copytronics,  Inc., P.O. Box 5489,  Jacksonville,  FL
                  32247 and Essex  Corporation  (Minolta copier 5320, serial no.
                  3128468, maintenance and extra copier).


                                      - 4 -

<PAGE>


                                                      ASSET PURCHASE AGREEMENT
                                                                 16 OCTOBER 1997

                                  SCHEDULE 1.4

                          ALLOCATION OF PURCHASE PRICE

                     FORM 8594 - ASSET ACQUISITION STATEMENT
                               UNDER SECTION 1060

PART II ASSETS TRANSFERRED - To be completed by all filers of an original
                             statement
<TABLE>
<CAPTION>

4. Assets         Aggregate Fair Market Value (Actual Amount for Class I)
- ---------         -------------------------------------------------------
<S>               <C>             
Class I           $           0.00

Class II          $           0.00

Class III         $     547,381.17

Class IV          $     927,618.83

Total             $   1,475,000.00

</TABLE>


<PAGE>

                                                     ASSET PURCHASE AGREEMENT
                                                              16 OCTOBER 1997

                                  SCHEDULE 2.3

                             EXCEPTIONS TO VALIDITY


                                      None.



<PAGE>



                                                      ASSET PURCHASE AGREEMENT
                                                               16 OCTOBER 1997
                                  SCHEDULE 2.5

                                FINANCIAL REPORTS


         1.       Form 10-KSB (U.S. Securities & Exchange Commission) for fiscal
                  year ended December 29, 1996.

         2.       Form  10-QSB  (U.S.  Securities  &  Exchange  Commission)  for
                  quarterly period ending March 30, 1997.

         3.       Form  10-QSB  (U.S.  Securities  &  Exchange  Commission)  for
                  quarterly period ending June 29, 1997.



<PAGE>


                                                      ASSET PURCHASE AGREEMENT
                                                               16 OCTOBER 1997

                                  SCHEDULE 2.8

           POWERS OF ATTORNEY; LIMITATIONS ON COMPETITION; GUARANTEES


                                      None.



<PAGE>


                                                      ASSET PURCHASE AGREEMENT
                                                               16 OCTOBER 1997

                                  SCHEDULE 2.9

                              SIGNIFICANT CUSTOMERS
<TABLE>


                  SYSTEMS EFFECTIVENESS DIVISION CUSTOMER LIST


                                         YR END 1996
<CAPTION>

CUSTOMER                           REVENUE             %
- -----------------            -----------------    --------
<S>                            <C>                  <C>  
DOE                            $2,503,451.55        48.50
FT. BELVOIR                      $767,906.42        14.88
NASA                             $532,171.72        10.31
FT. RUCKER                       $361,965.34         7.01
FHWA                             $301,529.69         5.84
NSF                              $234,001.23         4.53
</TABLE>

To the best of Essex's knowledge, the following information relates to potential
future customer actions regarding current or future business.

1.       DOE Letter dated August 29, 1997 from Mr. M. Frietze, Chief, AL Support
          Branch to Mr.E. Edwards, Essex.

2.       DOE Memorandum dated June 24, 1997 from Mr. D. To, Contracting Officer
         Representative to Mr. E. Edwards, Essex.

3.       Essex letter dated June 26, 1997 from Mr. E. Edwards, Essex to Mr. D.
         To, DOE COR.

4.       Secretary of Energy Pena's "Worst Case Scenario Budget Exercise" dated
         July 31, 1997 (4 pages).

5.       Orlando  operation  dependent upon Small Business  Innovative  Research
         (SBIR)  contracts which are restricted for award to entities in various
         ways (number of employees, annual revenues).



<PAGE>


                                                      ASSET PURCHASE AGREEMENT
                                                               16 OCTOBER 1997

                                  SCHEDULE 2.10

                             GOVERNMENTAL APPROVALS


1.       GOVERNMENTAL APPROVALS

         1.1      Contract No. DAAD05-93-D-7022,  dated April 1, 1993, issued by
                  the Directorate of Contracting,  USAAPGSA, Ryan Building, APG,
                  Maryland  21005-5001,  to Essex  Corporation,  1430 Springhill
                  Road, Suite 510, McLean, Virginia 22102.

         1.2      Contract No. DAAB07-97-C-6013, dated March 14, 1997, issued by
                  USA CECOM ACQ CTR,  Washington  OPS  Office,  2461  Eisenhower
                  Avenue (AMSEL-AC-WB- B), Alexandria,  Virginia 22331-0700,  to
                  Essex  Corporation,  1430 Springhill  Road, Suite 510, McLean,
                  Virginia 22102.

         1.3      Subcontract No. 116054-24195, dated February 11, 1997, issued
                  by Fibertek, Inc. ESS, 510 Herndon Parkway, Herndon, Virginia
                  22070, to Essex  Corporation, Systems Effectiveness Division,
                  1430  Springhill Road,  Suite  510,  McLean,  Virginia  22102
                  including delivery order DAAB07-96-D-H753.

         1.4      Contract No.  NAS9-97022,  dated  December 2, 1996,  issued by
                  NASA Johnson Space Center, S&LS Acquisition  Management,  2101
                  NASA Road 1, Houston, Texas 77058-3698,  to Essex Corporation,
                  1430 Springhill Road, Suite 510, McLean, Virginia 22102.

         1.5      Contract  No. DE-AC04-93AL91124,  dated  September  15, 1993,
                  issued  by  the  Department of Energy, Albuquerque Operations
                  Office, P. O. Box 5400, Albuquerque, New Mexico 87185-5400, to
                  Essex  Corporation, 1430 Springhill  Road,  Suite 510, McLean,
                  Virginia 22102.

         1.6      Contract - Grant No. 1 R43 AA11608-01 dated September 22, 1997
                  issued by National Institutes of Health, 6000 Executive Blvd.,
                  Rockville,  MD 20892-7003 to Essex Corporation,  1040 Woodcock
                  Road, Suite 227, Orlando, FL 32803.

         1.7      Contract No.  USZA92-97-C-0055 dated September 16, 1997 issued
                  by the HQ, US Army Special Operations  Command,  Ft. Bragg, NC
                  28307-5200 to Essex  Corporation,  1430 Springhill Road, Suite
                  510, McLean, VA 22102.



                                      - 1 -

<PAGE>


                                                      ASSET PURCHASE AGREEMENT
                                                               16 OCTOBER 1997

         1.8      Contract No. N39998-97-M-5542 dated September 10, 1997 issued
                  by Dept. Of Defense,  Office  of  Special  Technology,  10530
                  Riverview Road, Building 3,  Ft.Washington, MD 20744 to Essex
                  Corporation, 1430 Springhill Road, Suite 510,McLean, VA 22102.

         1.9      Contract - Grant No. 1 R43 AG14316-01 dated September 30, 1997
                  issued by National Institutes of Health, 6000 Executive Blvd.,
                  Rockville,  MD 20892-7003 to Essex Corporation,  1040 Woodcock
                  Road, Suite 227, Orlando, FL 32803.

2.       FILINGS WITH GOVERNMENTAL AGENCIES

         2.1      Amendment to UCC financing statements in Alabama, and Virginia
                  to release certain  collateral  covered thereby  pursuant to a
                  Security  Agreement,  dated  December 29, 1995,  between Essex
                  Corporation and a consortium of debenture  holders under a 10%
                  Convertible Collateralized Due 2000 Debentures, dated December
                  29, 1995.


                                      - 2 -

<PAGE>


                                                      ASSET PURCHASE AGREEMENT
                                                               16 OCTOBER 1997

                                  SCHEDULE 2.11

                                 ADVERSE CHANGES


          None, except for borrowings in normal course of business under line of
credit from Signet Bank.




<PAGE>


                                                      ASSET PURCHASE AGREEMENT
                                                               16 OCTOBER 1997

                                  SCHEDULE 2.13

                            NON-COMPLIANCE WITH LAWS


                                      None.



<PAGE>


                                                      ASSET PURCHASE AGREEMENT
                                                               16 OCTOBER 1997

                                  SCHEDULE 2.14

                                EMPLOYEE BENEFITS


      As listed in Essex Corporation Employee Benefits Program and Flexible
                       Benefits Plan - Plan Year 1997/98



<PAGE>


                                                      ASSET PURCHASE AGREEMENT
                                                               16 OCTOBER 1997

                                  SCHEDULE 2.16

                                    INSURANCE



     LOCATION    COVERAGE        LIMITS
- --------------------------------------------------------------------------------
1.   ALL         general         $1 million per occurrence combined single limit
                 liability       $2 million per location aggregate
                                 $2 million per location products/completed ops
                                 aggregate based on $183,000 VA payroll- 47366,
                                 30 NM students- 47474, $36,000 FL payroll and
                                 $60,000 AL payroll

2.   VA          property        $228,000 contents, $125,000 valuable papers

3.   NM          property        nil

4.   FL          property        $8,000 contents, $25,000 valuable papers

5.   AL          property        $15,000 trailers, $25,000 valuable papers

6.   VA          workers         100/500/100 emp liability based on $183,000
                 compensation    payroll- 8810

7.   NM          workers         100/500/100 emp liability based on $263,500
                 compensation    payroll- 8868, $48,500- 8742, $20,000- 3574,
                                 $11,500- 9014

8.   FL          workers         100/500/100 emp liability based on $36,000
                 compensation    payroll- 8810

9.   AL          workers         100/500/100 emp liability based on $60,000
                 compensation    payroll- 8810

10.  ALL         umbrella        $4 million per occurrence combined single limit
                                 $4 million per location aggregate
                                 $4 million per location products/completed ops
                                 aggregate




<PAGE>


                                                      ASSET PURCHASE AGREEMENT
                                                               16 OCTOBER 1997

                                  SCHEDULE 2.17

                                    CONTRACTS


1.       Contract  No.  DAAD05-93-D-7022,  dated  April  1,  1993, issued by the
         Directorate  of  Contracting,  USAAPGSA,  Ryan Building,  APG, Maryland
         21005-5001,  to  Essex  Corporation,  1430  Springhill Road, Suite 510,
         McLean, Virginia 22102.

2.       Contract  No.  DAAB07-97-C-6013,  dated March 14,  1997,  issued by USA
         CECOM  ACQ  CTR,   Washington  OPS  Office,   2461  Eisenhower   Avenue
         (AMSEL-AC-WB-B), Alexandria, Virginia 22331-0700, to Essex Corporation,
         1430 Springhill Road, Suite 510, McLean, Virginia 22102.

3.       Subcontract  No.  116054-24195,  dated  February  11,  1997,  issued by
         Fibertek,  Inc.  ESS,  510 Herndon Parkway, Herndon, Virginia 22070, to
         Essex  Corporation,  Systems  Effectiveness  Division,  1430 Springhill
         Road,  Suite 510,  McLean,  Virginia  22102  including  Delivery  Order
         DAAB07-96-D-H753.

4.       Contract No. NAS9-97022, dated December 2, 1996, issued by NASA Johnson
         Space Center, S&LS Acquisition  Management,  2101 NASA Road 1, Houston,
         Texas  77058-3698,  to Essex  Corporation,  1430 Springhill Road, Suite
         510, McLean, Virginia 22102.

5.       Contract No. DE-AC04-93AL91124, dated September 15, 1993, issued by the
         Department  of  Energy,  Albuquerque  Operations Office, P.O. Box 5400,
         Albuquerque,  New  Mexico   87185-5400,   to  Essex  Corporation,  1430
         Springhill Road, Suite 510, McLean, Virginia 22102.

6.       Contract  - Grant No.  1 R43 AA11608-01 dated September 22, 1997 issued
         by National  Institutes of Health,  6000 Executive Blvd., Rockville, MD
         20892-7003  to  Essex  Corporation,  1040  Woodcock  Road,  Suite  227,
         Orlando, FL 32803.

7.       Contract No.  USZA92-97-C-0055  dated September  16, 1997 issued by the
         HQ,  US  Army  Special  Operations Command, Ft. Bragg, NC 28307-5200 to
         Essex Corporation, 1430 Springhill Road, Suite 510, McLean, VA 22102.

8.       Contract  No. N39998-97-M-5542 dated September 10, 1997 issued by Dept.
         Of  Defense,  Office  of  Special  Technology,  10530  Riverview  Road,
         Building  3,  Ft. Washington,  MD  20744  to  Essex  Corporation, 1430
         Springhill Road, Suite 510, McLean, VA 22102.



                                      - 1 -

<PAGE>


                                                      ASSET PURCHASE AGREEMENT
                                                               16 OCTOBER 1997

9.       Contract - Grant No.  1 R43 AG14316-01 dated September 30, 1997 issued
         by  National Institutes of Health, 6000 Executive Blvd., Rockville, MD
         20892-7003  to  Essex  Corporation,  1040  Woodcock  Road,  Suite 227,
         Orlando, FL 32803.

10.      Agreement  for Consulting Services, dated June 7, 1993,  between Edward
         H. Frederick, Jr.,and Essex Corporation.

11.      Agreement  for  Consulting  Services,  dated  March  11,  1997, between
         Stephen A. Povah and Essex Corporation.

12.      Subcontract No. 2418A,  dated December 16, 1996, between the University
         of Central Florida and Essex Corporation.

13.      Subcontract  No.  2420-01,  dated March 21, 1997, between James Madison
         University and Essex Corporation.

14.      Subcontract No. 2418B, dated December 16, 1996, between Jones and Jones
         Research Associated and Essex Corporation

15.      All leases set forth in SCHEDULE 2.18.

16.      All capital leases set forth in SCHEDULE 1.3(3).

17.      Items 1 - 5 on SCHEDULE 2.9.

18.      All lease maintenance agreements per SCHEDULE 1.3(5).


                                      - 2 -

<PAGE>


                                                      ASSET PURCHASE AGREEMENT
                                                               16 OCTOBER 1997

                                  SCHEDULE 2.18

                                     LEASES


1.       Lease, dated October 1, 1986, between Freida V. Bruer and Essex
         Corporation, a Virginia corporation, for one 14' x 70' mobile office
         unit.

2.       Lease,  dated  December 8, 1994,  between TDP  Corporation,  a Virginia
         corporation,  and Essex Corporation,  a Virginia  corporation,  for the
         premises  identified  as  Suite  510 of the  building  located  at 1430
         Springhill Road, McLean Virginia, commonly known as Tysons Dulles Plaza
         II.

3.       Lease,  dated April 1, 1997,  between  Koger  Equity,  Inc.,  a Florida
         corporation,  and Essex Corporation,  a Virginia  corporation,  for the
         premises  identified  as  Suite  227 of the  building  located  at 1040
         Woodcock Road, Orlando Florida, commonly known as Palmetto.



<PAGE>


                                                      ASSET PURCHASE AGREEMENT
                                                               16 OCTOBER 1997

                                  SCHEDULE 2.19

                             INTELLECTUAL PROPERTIES

1.       LIST:

         1.1      Delta

         1.2      CDL/Passing Gear

         1.3      Information from SED SBIR's to extent not restricted by U. S.
                  Government prior rights.  Per following table:


ESSEX    SHORT TITLE/DATE/AGENCY    PRODUCT      COMMENTS
JOB NO.
2418     VE Assess Test Battery     Software     Project on-going
         12/96-12/98 (NASA)

2381     Indexing - Posture         Software     Technique for converting video
         10/94-10/96 (NSF)                       Data

2366     A Smart System (PAT)       Software     Technique for converting video
         2/94-2/96 (NASA)                        Data

2365     Performance Readiness      Software     A series of visual & cognitive
         2/94-2/96 (NASA)                        tests were computerized

2353     Temporal Factors           Software -   Visual tests were computerized
         6/93-6/95 (NSF)            Temporal
                                    Factors
                                    Battery

2350     Isoperformance             Software     Programs written to analyze
         8/93-8/95 (Brooks AFB)                  manpower data

2342     Record/Eval Sim Sick       Software     Technique for converting video
         Device - 4/93-4/95                      data
         (NAVAIR)

2339     Workload Device            Hardware &   Eye movement scoring algorithms
         4/93-4/95 (NAWC)           Software     developed

2326     Dose Equivalency           Software     for DELTA
         9/92-9/94 (NSF)

2320     Dark Focus                 Hardware -   Hand held device developed for
         9/92-9/94 (NASA)           Dark Focus   visual test
                                    Device



                                      - 1 -

<PAGE>


                                                       ASSET PURCHASE AGREEMENT
                                                                16 OCTOBER 1997

2.   EXCEPTIONS:

     2.1   Letters from various legal counsel regarding US Patent No. 5,103,408.


                                      - 2 -

<PAGE>


                                                       ASSET PURCHASE AGREEMENT
                                                                16 OCTOBER 1997

                                  SCHEDULE 2.20

                    PROPRIETARY INFORMATION OF THIRD PARTIES


                                      None.



                                     <PAGE>


                                                      ASSET PURCHASE AGREEMENT
                                                               16 OCTOBER 1997

                                  SCHEDULE 2.22

                                      TAXES


                                      None.



<PAGE>


                                                      ASSET PURCHASE AGREEMENT
                                                               16 OCTOBER 1997

                                  SCHEDULE 2.23

                                   LITIGATION


                                      None.



<PAGE>


                                                      ASSET PURCHASE AGREEMENT
                                                               16 OCTOBER 1997

                                  SCHEDULE 2.24

                              ENVIRONMENTAL PERMITS


                                      None.



<PAGE>


                                                      ASSET PURCHASE AGREEMENT
                                                               16 OCTOBER 1997

                                  SCHEDULE 5.1

                                    CONSENTS


1.       [reserved]

2.       Novation of Contract No. DAAD05-93-D-7022, dated April 1, 1993, issued
         by  the  Directorate of  Contracting,  USAAPGSA,  Ryan Building,  APG,
         Maryland 21005-5001, to Essex Corporation, 1430 Springhill Road, Suite
         510, McLean, Virginia 22102.

3.       Novation of Contract No. DAAB07-97-C-6013, dated March 14, 1997, issued
         by USA CECOM ACQ CTR,  Washington OPS Office,  2461  Eisenhower  Avenue
         (AMSEL-AC-WB-   B),   Alexandria,   Virginia   22331-0700,   to   Essex
         Corporation, 1430 Springhill Road, Suite 510, McLean, Virginia 22102.

4.       Novation  of  Subcontract  No.  116054-24195, dated February 11, 1997,
         issued  by Fibertek,  Inc. ESS, 510 Herndon Parkway, Herndon, Virginia
         22070,  to Essex  Corporation,  Systems  Effectiveness Division,  1430
         Springhill Road, Suite 510, McLean,  Virginia 22102 including Delivery
         Order DAAB07-96-D-H753.

5.       Novation of Contract No. NAS9-97022,  dated December 2, 1996, issued by
         NASA Johnson Space Center, S&LS Acquisition Management,  2101 NASA Road
         1, Houston,  Texas 77058- 3698, to Essex  Corporation,  1430 Springhill
         Road, Suite 510, McLean, Virginia 22102.

6.       Novation  of  Contract No. DE-AC04-93AL91124, dated September 15, 1993,
         issued  by the  Department of  Energy,  Albuquerque  Operations  Office
         P. O.   Box  5400,   Albuquerque,   New  Mexico  87185-5400,  to  Essex
         Corporation, 1430 Springhill Road, Suite 510, McLean, Virginia 22102.

7.       Novation  of Contract - Grant No. 1 R43 AA11608-01 dated September 22,
         1997 issued  by National  Institutes of Health,  6000 Executive Blvd.,
         Rockville, MD 20892-7003  to Essex  Corporation,  1040  Woodcock Road,
         Suite 227, Orlando, FL 32803.

8.       Novation of  Contract  No. USZA92-97-C-0055  dated  September  16, 1997
         issued by  the  HQ, US  Army Special  Operations Command, Ft. Bragg, NC
         28307-5200 to Essex  Corporation,  1430  Springhill  Road,  Suite  510,
         McLean, VA 22102.



                                      - 1 -

<PAGE>


                                                      ASSET PURCHASE AGREEMENT
                                                               16 OCTOBER 1997

9        Novation  of  Contract  No. N39998-97-M-5542  dated  September 10, 1997
         issued by  Dept.  Of  Defense,  Office  of  Special  Technology,  10530
         Riverview  Road,  Building   3,  Ft.  Washington,  MD  20744   to Essex
         Corporation, 1430 Springhill Road, Suite 510, McLean, VA 22102.

10.      Novation of Contract -  Grant No.  1 R43 AG14316-01 dated September 30,
         1997 issued  by  National Institutes  of Health, 6000  Executive Blvd.,
         Rockville,  MD 20892-7003  to  Essex  Corporation,  1040 Woodcock Road,
         Suite 227, Orlando, FL 32803.

11.      Assignment of Lease dated December 8, 1994, between TDP Corporation,  a
         Virginia  corporation,  and Essex Corporation,  a Virginia corporation,
         for the premises  identified  as Suite 510 of the  building  located at
         1430 Springhill Road, McLean Virginia, commonly known as Tysons Dulles
         Plaza II.


                                      - 2 -

                                     <PAGE>


                                                      ASSET PURCHASE AGREEMENT
                                                               16 OCTOBER 1997

                                  SCHEDULE 5.3

                                NOVATED CONTRACTS


1.       Contract  No. DAAD05-93-D-7022,  dated  April  1,  1993,  issued by the
         Directorate  of  Contracting,  USAAPGSA,  Ryan  Building, APG, Maryland
         21005-5001,  to  Essex Corporation,  1430  Springhill  Road, Suite 510,
         McLean, Virginia 22102.

2.       Contract  No.  DAAB07-97-C-6013,  dated March 14,  1997,  issued by USA
         CECOM  ACQ  CTR,   Washington  OPS  Office,   2461  Eisenhower   Avenue
         (AMSEL-AC-WB-B), Alexandria, Virginia 22331-0700, to Essex Corporation,
         1430 Springhill Road, Suite 510, McLean, Virginia 22102.

3.       Subcontract  No.  116054-24195,  dated  February  11,  1997,  issued by
         Fibertek,  Inc. ESS,  510 Herndon Parkway,  Herndon, Virginia 22070, to
         Essex  Corporation,  Systems  Effectiveness  Division,  1430 Springhill
         Road, Suite 510, McLean, Virginia 22102.

4.       Contract No. NAS9-97022, dated December 2, 1996, issued by NASA Johnson
         Space Center, S&LS Acquisition  Management,  2101 NASA Road 1, Houston,
         Texas  77058-3698,  to Essex  Corporation,  1430 Springhill Road, Suite
         510, McLean, Virginia 22102.

5.       Contract No. DE-AC04-93AL91124, dated September 15, 1993, issued by the
         Department of  Energy,  Albuquerque  Operations  Office, P.O. Box 5400,
         Albuquerque,  New   Mexico  87185-5400,   to  Essex  Corporation,  1430
         Springhill Road, Suite 510, McLean, Virginia 22102.

6.       Novation of  Contract - Grant  No. 1 R43 AA11608-01 dated September 22,
         1997  issued  by  National  Institutes of Health, 6000 Executive Blvd.,
         Rockville,  MD 20892-7003  to  Essex  Corporation,  1040 Woodcock Road,
         Suite 227, Orlando, FL 32803.

7.       Novation  of Contract - Grant No.  1 R43 AG14316-01 dated September 30,
         1997  issued by  National Institutes  of Health,  6000 Executive Blvd.,
         Rockville,  MD 20892-7003  to  Essex  Corporation,  1040 Woodcock Road,
         Suite 227, Orlando, FL 32803.

8.       Novation  of  Contract No.  USZA92-97-C-0055  dated  September 16, 1997
         issued  by  the   HQ, US Army Special Operations Command, Ft. Bragg, NC
         28307-5200 to  Essex  Corporation,  1430  Springhill  Road  Suite  510,
         McLean, VA 22102.


                                      - 1 -

<PAGE>


                                                      ASSET PURCHASE AGREEMENT
                                                               16 OCTOBER 1997

9.       Novation  of  Contract No.  N39998-97-M-5542  dated September 10, 1997
         issued  by  Dept. Of  Defense,  Office  of  Special  Technology, 10530
         Riverview  Road,  Building  3,  Ft.  Washington,  MD  20744  to  Essex
         Corporation, 1430 Springhill Road, Suite 510, McLean, VA 22102.


                                      - 2 -

<PAGE>


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